diff --git a/sapi/phpdbg/config.m4 b/sapi/phpdbg/config.m4
index ac95cf3c57f9..10dd2029b4c3 100644
--- a/sapi/phpdbg/config.m4
+++ b/sapi/phpdbg/config.m4
@@ -1,7 +1,7 @@
 PHP_ARG_ENABLE([phpdbg],
   [for phpdbg support],
-  [AS_HELP_STRING([--enable-phpdbg],
-    [Build phpdbg])],
+  [AS_HELP_STRING([--disable-phpdbg],
+    [Disable building of phpdbg])],
   [yes],
   [yes])