diff --git a/xwords4/android/XWords4/jni/Android.mk b/xwords4/android/XWords4/jni/Android.mk
index f499f913c..8c3d0b142 100644
--- a/xwords4/android/XWords4/jni/Android.mk
+++ b/xwords4/android/XWords4/jni/Android.mk
@@ -19,6 +19,7 @@ local_DEFINES += \
 	-DPERIMETER_FOCUS \
 	-DKEY_SUPPORT \
 	-DPOINTER_SUPPORT \
+	-DSCROLL_DRAG_THRESHHOLD=1 \
 	-DNODE_CAN_4 \
 	-D__LITTLE_ENDIAN \