diff --git a/xwords4/symbian/inc/xptypes.h b/xwords4/symbian/inc/xptypes.h
index ae936dc41..c202c6e14 100644
--- a/xwords4/symbian/inc/xptypes.h
+++ b/xwords4/symbian/inc/xptypes.h
@@ -37,6 +37,10 @@
 extern "C" {
 #endif
 
+#ifndef XWORDS_DIR
+# define XWORDS_DIR "xwords_80"
+#endif
+
 #define XP_TRUE ((XP_Bool)(1==1))
 #define XP_FALSE ((XP_Bool)(1==0))