diff --git a/Mutation.h b/Mutation.h
index 634ab58..da35256 100644
--- a/Mutation.h
+++ b/Mutation.h
@@ -107,7 +107,7 @@ public:
 	Image * getMutated(Image* img) {
 		Image* mut = new Image(*img);
 		mut->modulate(125, 100, 100);
-		mut->sigmoidalContrast(false, 20.0);
+		mut->sigmoidalContrast(false, 5.0);
 		return mut;
 	}
 	string ToString() {