diff --git a/release-packaging/Classes/FluidDataSet.sc b/release-packaging/Classes/FluidDataSet.sc
index 7b1503d..3a9a65b 100644
--- a/release-packaging/Classes/FluidDataSet.sc
+++ b/release-packaging/Classes/FluidDataSet.sc
@@ -39,7 +39,7 @@ FluidDataSet : UGen {
         this.pr_sendMsg(\updatePoint,[label,buffer.asUGenInput],action);
     }
 
-    deletePoint{|label,buffer action|
+    deletePoint{|label,buffer, action|
         this.pr_sendMsg(\deletePoint,[label,buffer.asUGenInput],action);
     }