diff --git a/src/main/java/net/haesleinhuepf/clij2/plugins/UndefinedToZero.java b/src/main/java/net/haesleinhuepf/clij2/plugins/UndefinedToZero.java
index c5f4fece..3ff20a89 100644
--- a/src/main/java/net/haesleinhuepf/clij2/plugins/UndefinedToZero.java
+++ b/src/main/java/net/haesleinhuepf/clij2/plugins/UndefinedToZero.java
@@ -31,7 +31,7 @@ public Object[] getDefaultValues() {
 
     @Override
     public boolean executeCL() {
-        boolean result = getCLIJ2().smallerConstant((ClearCLBuffer)( args[0]), (ClearCLBuffer)(args[1]), asFloat(args[2]));
+        boolean result = getCLIJ2().undefinedToZero((ClearCLBuffer)( args[0]), (ClearCLBuffer)(args[1]));
         return result;
     }