diff --git a/Misc/NEWS.d/next/Build/2022-11-04-02-58-10.gh-issue-99086.DV_4Br.rst b/Misc/NEWS.d/next/Build/2022-11-04-02-58-10.gh-issue-99086.DV_4Br.rst
new file mode 100644
index 00000000000000..e320ecfdfbb791
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2022-11-04-02-58-10.gh-issue-99086.DV_4Br.rst
@@ -0,0 +1 @@
+Fix ``-Wimplicit-int`` compiler warning in :program:`configure` check for ``PTHREAD_SCOPE_SYSTEM``.
diff --git a/configure b/configure
index e39c16eee2b903..32c27a468d2f00 100755
--- a/configure
+++ b/configure
@@ -10837,7 +10837,7 @@ else
       void *foo(void *parm) {
         return NULL;
       }
-      main() {
+      int main() {
         pthread_attr_t attr;
         pthread_t id;
         if (pthread_attr_init(&attr)) exit(-1);
diff --git a/configure.ac b/configure.ac
index d5ca7172ca7c1f..f7668224be3633 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3185,7 +3185,7 @@ if test "$posix_threads" = "yes"; then
       void *foo(void *parm) {
         return NULL;
       }
-      main() {
+      int main() {
         pthread_attr_t attr;
         pthread_t id;
         if (pthread_attr_init(&attr)) exit(-1);