diff --git a/wadsrc/static/zscript/shared/fastprojectile.txt b/wadsrc/static/zscript/shared/fastprojectile.txt
index fd877bd83..657c4680e 100644
--- a/wadsrc/static/zscript/shared/fastprojectile.txt
+++ b/wadsrc/static/zscript/shared/fastprojectile.txt
@@ -156,7 +156,7 @@ class FastProjectile : Actor
 					ExplodeMissile (NULL, NULL);
 					return;
 				}
-				if (frac != (0, 0, 0) && ripcount <= 0) 
+				if (!(frac.xy ~== (0, 0)) && ripcount <= 0) 
 				{
 					ripcount = count >> 3;