diff --git a/src/configure.in b/src/configure.in
index 6b3a7bda77d4ab080d442f611f5a8599c9c01b5e..2771e73780034cdcd7eb853ef026b65891e41106 100644
--- a/src/configure.in
+++ b/src/configure.in
@@ -1,4 +1,4 @@
-AC_REVISION("$Id: configure.in,v 1.317 1999/08/30 06:23:47 hubbe Exp $")
+AC_REVISION("$Id: configure.in,v 1.318 1999/08/30 07:35:48 hubbe Exp $")
 AC_INIT(interpret.c)
 AC_CONFIG_HEADER(machine.h)
 
@@ -1320,7 +1320,7 @@ int main()
         pike_cv_have_pthread_atfork=no
       ])
     ])
-    if test x$pike_cv_have_pthread_attr_setstacksize = xyes ; then
+    if test x$pike_cv_have_pthread_atfork = xyes ; then
       AC_MSG_RESULT(yes)
       AC_DEFINE(HAVE_PTHREAD_ATFORK)
     else