diff --git a/release-packaging/HelpSource/Classes/FluidPCA.schelp b/release-packaging/HelpSource/Classes/FluidPCA.schelp
index 186ee97..03a7cf5 100644
--- a/release-packaging/HelpSource/Classes/FluidPCA.schelp
+++ b/release-packaging/HelpSource/Classes/FluidPCA.schelp
@@ -142,7 +142,7 @@ w.front;
 // transform a single point with arbitrary value
 ~inbuf = Buffer.loadCollection(s,0.5.dup(12));
 ~outbuf = Buffer.new(s);
-~pca.transformPoint(~inbuf,~outbuf,{|x,y|x.postln;y.postln;})
+~pca.transformPoint(~inbuf,~outbuf,{|x|x.postln;})
 ::
 
 subsection:: Server Side Queries