diff --git a/src/engine/platform/c64.cpp b/src/engine/platform/c64.cpp
index 7ec478151..6f376ecd5 100644
--- a/src/engine/platform/c64.cpp
+++ b/src/engine/platform/c64.cpp
@@ -290,6 +290,7 @@ void DivPlatformC64::forceIns() {
     chan[i].insChanged=true;
     chan[i].testWhen=0;
   }
+  updateFilter();
 }
 
 void DivPlatformC64::reset() {