diff --git a/src/plugins/lua/lua.qbs b/src/plugins/lua/lua.qbs
index d4402c25ee3..f9689e208f2 100644
--- a/src/plugins/lua/lua.qbs
+++ b/src/plugins/lua/lua.qbs
@@ -47,6 +47,11 @@ QtcPlugin {
             condition: qbs.toolchain.contains("msvc")
             cpp.cxxFlags: "/bigobj"
         }
+
+        Properties {
+            condition: qbs.toolchain.contains("mingw")
+            cpp.cxxFlags: "-Wa,-mbig-obj"
+        }
     }
 
     Group {