diff --git a/avxsynth/builtinfunctions/src/filters/convolution.cpp b/avxsynth/builtinfunctions/src/filters/convolution.cpp
index 500307d..7d2dcb3 100644
--- a/avxsynth/builtinfunctions/src/filters/convolution.cpp
+++ b/avxsynth/builtinfunctions/src/filters/convolution.cpp
@@ -158,7 +158,7 @@ void GeneralConvolution::initBuffers(IScriptEnvironment* env)
   pbyG = new BYTE[buffSize];
   pbyB = new BYTE[buffSize];
 
-  if(pbyA && pbyR && pbyG && pbyB == false)
+  if(!(pbyA && pbyR && pbyG && pbyB))
     env->ThrowError("GeneralConvolution: out of memory");
 }