diff --git a/src/dev/flang/fuir/analysis/TailCall.java b/src/dev/flang/fuir/analysis/TailCall.java
index 7714472593..b54deb23be 100644
--- a/src/dev/flang/fuir/analysis/TailCall.java
+++ b/src/dev/flang/fuir/analysis/TailCall.java
@@ -204,7 +204,7 @@ private boolean sameField(int a, int b)
    */
   private boolean isTailCall(int cl, int cls, int s, int mustAssignTo)
   {
-    return switch (_fuir.codeAt(cls))
+    return _fuir.alwaysResultsInVoid(cls) || switch (_fuir.codeAt(cls))
       {
       case Call ->
         {