diff --git a/wrlib/convolve.c b/wrlib/convolve.c
index 57072f05..a152e267 100644
--- a/wrlib/convolve.c
+++ b/wrlib/convolve.c
@@ -135,6 +135,8 @@ int RBlurImage(RImage * image)
 		}
 	}
 
+	free(tmpp);
+
 	return True;
 }