diff --git a/src/mouse.c b/src/mouse.c
index c2bde6d..25d6fa8 100644
--- a/src/mouse.c
+++ b/src/mouse.c
@@ -3031,7 +3031,7 @@
 }
 
 #if defined(NEED_VCOL2COL) || defined(FEAT_BEVAL) || defined(FEAT_PROP_POPUP) \
-	|| defined(PROTO)
+	|| defined(FEAT_EVAL) || defined(PROTO)
 /*
  * Convert a virtual (screen) column to a character column.
  * The first column is one.