diff --git a/src/libcalamares/utils/Logger.h b/src/libcalamares/utils/Logger.h
index 0d7d5c870..25c19cf58 100644
--- a/src/libcalamares/utils/Logger.h
+++ b/src/libcalamares/utils/Logger.h
@@ -71,8 +71,11 @@ private:
 inline CDebug&
 operator<<( CDebug&& s, const FuncSuppressor& f )
 {
-    s.m_funcinfo = nullptr;
-    s << f.m_s;
+    if ( s.m_funcinfo )
+    {
+        s.m_funcinfo = nullptr;
+        s.m_msg = QString( f.m_s );
+    }
     return s;
 }