diff --git a/src/kmime_content.h b/src/kmime_content.h
--- a/src/kmime_content.h
+++ b/src/kmime_content.h
@@ -308,7 +308,7 @@
       @param type The type of the header to look for.
       @return true if a header was found and removed.
     */
-    Q_REQUIRED_RESULT bool removeHeader(const char *type);
+    bool removeHeader(const char *type);
 
     /**
       Searches for the first header of type @p T, and deletes it, removing