diff --git a/acinclude.m4.in b/acinclude.m4.in
index 443ca62..f73c8bb 100644
--- a/acinclude.m4.in
+++ b/acinclude.m4.in
@@ -2781,7 +2781,7 @@ if test "$kde_qtver" -gt "2"; then
 AC_TRY_LINK(
 [#include <tqtimer.h>],
             [
-            QTimer *test_timer(0);
+            TQTimer *test_timer(0);
             test_timer->start(1000);],
             eval "kde_cv_tqt=no",
             eval "kde_cv_tqt=yes")