diff --git a/plugins/Stk/Mallets/Mallets.cpp b/plugins/Stk/Mallets/Mallets.cpp
index 084482c43d2..9d374023f0d 100644
--- a/plugins/Stk/Mallets/Mallets.cpp
+++ b/plugins/Stk/Mallets/Mallets.cpp
@@ -304,18 +304,18 @@ void MalletsInstrument::playNote( NotePlayHandle * _n,
 
 		if(p < 9)
 		{
-			hardness += random * static_cast<float>(rand() % 128) - 64.0;
+			hardness += random * static_cast<float>(fast_rand() % 128) - 64.0;
 			hardness = std::clamp(0.0f, hardness, 128.0f);
 
-			position += random * static_cast<float>(rand() % 64) - 32.0;
+			position += random * static_cast<float>(fast_rand() % 64) - 32.0;
 			position = std::clamp(0.0f, position, 64.0f);
 		}
 		else if(p == 9)
 		{
-			modulator += random * static_cast<float>(rand() % 128) - 64.0;
+			modulator += random * static_cast<float>(fast_rand() % 128) - 64.0;
 			modulator = std::clamp(0.0f, modulator, 128.0f);
 
-			crossfade += random * static_cast<float>(rand() % 128) - 64.0;
+			crossfade += random * static_cast<float>(fast_rand() % 128) - 64.0;
 			crossfade = std::clamp(0.0f, crossfade, 128.0f);
 		}