diff --git a/config/ompi_config_pthreads.m4 b/config/ompi_config_pthreads.m4
index 3f073d8c0d..b70c115df7 100644
--- a/config/ompi_config_pthreads.m4
+++ b/config/ompi_config_pthreads.m4
@@ -57,6 +57,7 @@ int main(int argc, char* argv[])
     pthread_attr_t attr;
 
     me = pthread_self(); 
+    pthread_atfork(NULL, NULL, NULL);
     pthread_attr_init(&attr); 
     pthread_cleanup_push(cleanup_routine, 0);
     pthread_create(&newthread, &attr, thread_main, 0);