diff --git a/smoke/smoke.h b/smoke/smoke.h
index c76d7900..4a320d0b 100644
--- a/smoke/smoke.h
+++ b/smoke/smoke.h
@@ -34,7 +34,7 @@
     THE POSSIBILITY OF SUCH DAMAGE.
 */
 
-#define ENABLE_QSTYLECONTROLELEMENTDATA_SLOW_COPY 1
+#define ENABLE_TQSTYLECONTROLELEMENTDATA_SLOW_COPY 1
 
 class SmokeBinding;