diff --git a/xwords4/android/XWords4-bt/jni/Android.mk b/xwords4/android/XWords4-bt/jni/Android.mk
index ae57c40ce..e1ff553d1 100644
--- a/xwords4/android/XWords4-bt/jni/Android.mk
+++ b/xwords4/android/XWords4-bt/jni/Android.mk
@@ -33,7 +33,6 @@ local_DEFINES += \
 	-DFEATURE_TRAY_EDIT \
 	-DMAX_ROWS=32 \
 	-DINITIAL_CLIENT_VERS=2 \
-	-DNODE_CAN_4 \
 	-DRELAY_ROOM_DEFAULT=\"\"\
 	-D__LITTLE_ENDIAN \
 
diff --git a/xwords4/android/XWords4-sms/jni/Android.mk b/xwords4/android/XWords4-sms/jni/Android.mk
index 012a4b0fc..d1169b0a9 100644
--- a/xwords4/android/XWords4-sms/jni/Android.mk
+++ b/xwords4/android/XWords4-sms/jni/Android.mk
@@ -37,7 +37,6 @@ local_DEFINES += \
 	-DHASH_STREAM \
 	-DXWFEATURE_BASE64 \
 	-DINITIAL_CLIENT_VERS=2 \
-	-DNODE_CAN_4 \
 	-DRELAY_ROOM_DEFAULT=\"\" \
 	-D__LITTLE_ENDIAN \
 
diff --git a/xwords4/android/XWords4/jni/Android.mk b/xwords4/android/XWords4/jni/Android.mk
index 671e37409..7154bc7eb 100644
--- a/xwords4/android/XWords4/jni/Android.mk
+++ b/xwords4/android/XWords4/jni/Android.mk
@@ -34,7 +34,6 @@ local_DEFINES += \
 	-DHASH_STREAM \
 	-DXWFEATURE_BASE64 \
 	-DINITIAL_CLIENT_VERS=2 \
-	-DNODE_CAN_4 \
 	-DRELAY_ROOM_DEFAULT=\"\" \
 	-D__LITTLE_ENDIAN \
 
diff --git a/xwords4/android/XWords4/jni/anddict.c b/xwords4/android/XWords4/jni/anddict.c
index 9b9b06362..382736b7f 100644
--- a/xwords4/android/XWords4/jni/anddict.c
+++ b/xwords4/android/XWords4/jni/anddict.c
@@ -376,13 +376,8 @@ parseDict( AndDictionaryCtxt* ctxt, XP_U8 const* ptr, XP_U32 dictLength,
         CHECK_PTR( ptr, sizeof(offset), end );
         offset = n_ptr_tohl( &ptr );
         dictLength -= sizeof(offset);
-#ifdef NODE_CAN_4
         XP_ASSERT( dictLength % ctxt->super.nodeSize == 0 );
         *numEdges = dictLength / ctxt->super.nodeSize;
-#else
-        XP_ASSERT( dictLength % 3 == 0 );
-        *numEdges = dictLength / 3;
-#endif
 #ifdef DEBUG
         ctxt->super.numEdges = *numEdges;
 #endif
@@ -392,12 +387,8 @@ parseDict( AndDictionaryCtxt* ctxt, XP_U8 const* ptr, XP_U32 dictLength,
 
     if ( dictLength > 0 ) {
         ctxt->super.base = (array_edge*)ptr;
-#ifdef NODE_CAN_4
         ctxt->super.topEdge = ctxt->super.base 
             + (offset * ctxt->super.nodeSize);
-#else
-        ctxt->super.topEdge = ctxt->super.base + (offset * 3);
-#endif
     } else {
         ctxt->super.topEdge = (array_edge*)NULL;
         ctxt->super.base = (array_edge*)NULL;
diff --git a/xwords4/common/dawg.h b/xwords4/common/dawg.h
index a29187d2d..8473ed5fc 100644
--- a/xwords4/common/dawg.h
+++ b/xwords4/common/dawg.h
@@ -66,9 +66,7 @@ typedef struct dawg_header {
     unsigned char charTableRecNum;
     unsigned char valTableRecNum;
     unsigned char reserved[3]; /* worst case this points to a new resource */
-#ifdef NODE_CAN_4
     unsigned short flags;
-#endif
 } dawg_header;
 
 /* Part of xwords3 dictionaries on PalmOS */
diff --git a/xwords4/common/dictnry.c b/xwords4/common/dictnry.c
index bd30d8a13..52e0dadb6 100644
--- a/xwords4/common/dictnry.c
+++ b/xwords4/common/dictnry.c
@@ -600,7 +600,6 @@ dict_super_edge_for_index( const DictionaryCtxt* dict, XP_U32 index )
         result = NULL;
     } else {
         XP_ASSERT( index < dict->numEdges );
-#ifdef NODE_CAN_4
         /* avoid long-multiplication lib call on Palm... */
         if ( dict->nodeSize == 3 ) {
             index += (index << 1);
@@ -608,9 +607,6 @@ dict_super_edge_for_index( const DictionaryCtxt* dict, XP_U32 index )
             XP_ASSERT( dict->nodeSize == 4 );
             index <<= 2;
         }
-#else
-        index += (index << 1);
-#endif
         result = &dict->base[index];
     }
     return result;
@@ -627,7 +623,6 @@ dict_super_index_from( const DictionaryCtxt* dict, array_edge* p_edge )
 {
     unsigned long result;
 
-#ifdef NODE_CAN_4
     array_edge_new* edge = (array_edge_new*)p_edge;
     result = ((edge->highByte << 8) | edge->lowByte) & 0x0000FFFF;
 
@@ -639,14 +634,6 @@ dict_super_index_from( const DictionaryCtxt* dict, array_edge* p_edge )
             result |= 0x00010000; /* using | instead of + saves 4 bytes */
         }
     }
-#else
-    array_edge_old* edge = (array_edge_old*)p_edge;
-    result = ((edge->highByte << 8) | edge->lowByte) & 0x0000FFFF;
-    if ( (edge->bits & EXTRABITMASK_OLD) != 0 ) { 
-        result |= 0x00010000; /* using | instead of + saves 4 bytes */
-    }
-#endif
-
     return result;
 } /* dict_super_index_from */
 
@@ -673,11 +660,7 @@ dict_super_edge_with_tile( const DictionaryCtxt* dict, array_edge* from,
             from = NULL;
             break;
         }
-#ifdef NODE_CAN_4
         from += dict->nodeSize;
-#else
-        from += 3;
-#endif
     }
 
     return from;
diff --git a/xwords4/common/dictnry.h b/xwords4/common/dictnry.h
index 53788e77a..ea3f6bc79 100644
--- a/xwords4/common/dictnry.h
+++ b/xwords4/common/dictnry.h
@@ -83,10 +83,8 @@ struct DictionaryCtxt {
     XP_LangCode langCode;
 
     XP_U8 nFaces;
-#ifdef NODE_CAN_4
     XP_U8 nodeSize;
     XP_Bool is_4_byte;
-#endif
 
     XP_S8 blankTile; /* negative means there's no known blank */
     XP_Bool isUTF8;
@@ -130,22 +128,13 @@ struct DictionaryCtxt {
 #define dict_edge_with_tile(d,e,t) (*((d)->func_dict_edge_with_tile))(d,e,t)
 #define dict_getShortName(d)      (*((d)->func_dict_getShortName))(d)
 
-#ifdef NODE_CAN_4
-# define ISACCEPTING(d,e) \
+#define ISACCEPTING(d,e) \
     ((ACCEPTINGMASK_NEW & ((array_edge_old*)(e))->bits) != 0)
-# define IS_LAST_EDGE(d,e) \
+#define IS_LAST_EDGE(d,e) \
     ((LASTEDGEMASK_NEW & ((array_edge_old*)(e))->bits) != 0)
-# define EDGETILE(d,edge) \
+#define EDGETILE(d,edge) \
     ((Tile)(((array_edge_old*)(edge))->bits & \
             ((d)->is_4_byte?LETTERMASK_NEW_4:LETTERMASK_NEW_3)))
-#else
-# define ISACCEPTING(d,e) \
-    ((ACCEPTINGMASK_OLD & ((array_edge_old*)(e))->bits) != 0)
-# define IS_LAST_EDGE(d,e) \
-    ((LASTEDGEMASK_OLD & ((array_edge_old*)(e))->bits) != 0)
-# define EDGETILE(d,edge) \
-    ((Tile)(((array_edge_old*)(edge))->bits & LETTERMASK_OLD))
-#endif
 
 XP_Bool dict_tilesAreSame( const DictionaryCtxt* dict1, 
                            const DictionaryCtxt* dict2 );
diff --git a/xwords4/common/engine.c b/xwords4/common/engine.c
index 5d9717f38..eaecbe35b 100644
--- a/xwords4/common/engine.c
+++ b/xwords4/common/engine.c
@@ -716,11 +716,7 @@ figureCrosschecks( EngineCtxt* engine, XP_U16 x, XP_U16 y, XP_U16* scoreP,
             if ( IS_LAST_EDGE(dict,candidateEdge ) ) {
                 break;
             }
-#ifdef NODE_CAN_4
             candidateEdge += dict->nodeSize;
-#else
-            candidateEdge += 3;
-#endif
         }
     }
  outer:
@@ -893,9 +889,7 @@ leftPart( EngineCtxt* engine, Tile* tiles, XP_U16 tileLength,
                  anchorCol, row );
     if ( !engine->returnNOW ) {
         if ( (limit > 0) && (edge != NULL) ) {
-#ifdef NODE_CAN_4
             XP_U16 nodeSize = engine->dict->nodeSize;
-#endif
             if ( engine->nTilesMax > 0 ) {
                 for ( ; ; ) {
                     XP_Bool isBlank;
@@ -911,12 +905,7 @@ leftPart( EngineCtxt* engine, Tile* tiles, XP_U16 tileLength,
                     if ( IS_LAST_EDGE( dict, edge ) || engine->returnNOW ) {
                         break;
                     }
-#ifdef NODE_CAN_4
                     edge += nodeSize;
-#else
-                    edge += 3;
-#endif
-
                 }
             }
         }
@@ -980,11 +969,7 @@ extendRight( EngineCtxt* engine, Tile* tiles, XP_U16 tileLength,
                 if ( IS_LAST_EDGE( dict, edge ) ) {
                     break;
                 }
-#ifdef NODE_CAN_4
                 edge += dict->nodeSize;
-#else
-                edge += 3;
-#endif
             }
         }
 
diff --git a/xwords4/linux/Makefile b/xwords4/linux/Makefile
index 0d8686b92..eb788b2fb 100644
--- a/xwords4/linux/Makefile
+++ b/xwords4/linux/Makefile
@@ -78,7 +78,7 @@ endif
 
 include ../common/config.mk
 
-DEFINES += -DPLATFORM_LINUX -DKEY_SUPPORT -DKEYBOARD_NAV -DNODE_CAN_4 \
+DEFINES += -DPLATFORM_LINUX -DKEY_SUPPORT -DKEYBOARD_NAV \
 	-DSCROLL_DRAG_THRESHHOLD=1 -DNUM_SAVED_ENGINE_MOVES=32
 # DEFINES += -DSTUBBED_DICT
 ifdef DO_GTK
diff --git a/xwords4/linux/linuxdict.c b/xwords4/linux/linuxdict.c
index 76eace460..d6c25cf72 100644
--- a/xwords4/linux/linuxdict.c
+++ b/xwords4/linux/linuxdict.c
@@ -252,7 +252,6 @@ initFromDictFile( LinuxDictionaryCtxt* dctx, const char* fileName )
         flags &= ~DICT_HEADER_MASK;
         XP_DEBUGF( "has header!" );
     }
-#ifdef NODE_CAN_4
     if ( flags == 0x0001 ) {
         dctx->super.nodeSize = 3;
         charSize = 1;
@@ -281,10 +280,6 @@ initFromDictFile( LinuxDictionaryCtxt* dctx, const char* fileName )
         XP_ASSERT(0);
     }
 
-#else
-    XP_ASSERT( flags == 0x0001 );
-#endif
-
     if ( formatOk ) {
         XP_U8 numFaceBytes, numFaces;
 
@@ -351,17 +346,9 @@ initFromDictFile( LinuxDictionaryCtxt* dctx, const char* fileName )
         }
 
         if ( dictLength > 0 ) {
-# ifdef NODE_CAN_4
             numEdges = dictLength / dctx->super.nodeSize;
-# else
-            numEdges = dictLength / 3;
-# endif
 #ifdef DEBUG
-# ifdef NODE_CAN_4
             XP_ASSERT( (dictLength % dctx->super.nodeSize) == 0 );
-# else
-            XP_ASSERT( (dictLength % 3) == 0 );
-# endif
             dctx->super.numEdges = numEdges;
 #endif
             dctx->super.base = (array_edge*)ptr;