diff --git a/m4/curl-confopts.m4 b/m4/curl-confopts.m4
index 05c2d4b1037dd3e41d93f183c77b04bfc7ebc81f..6a7521b053240387aa6c3d88a04b94aa01e633ac 100644
--- a/m4/curl-confopts.m4
+++ b/m4/curl-confopts.m4
@@ -338,7 +338,7 @@ AC_DEFUN([CURL_CHECK_OPTION_RT], [
     default)
       dnl configure option not specified (so not disabled)
       dontwant_rt="no"
-      AC_MSG_RESULT([(assumed no)]
+      AC_MSG_RESULT([(assumed no)])
       ;;
     *)
       dnl --enable-rt option used (reverse logic)