diff --git a/include/ldap_pvt_thread.h b/include/ldap_pvt_thread.h
index 324467c436265cc0a4e459ebc4746dee0ca36b08..dd49969936f92b8f2079773ed9e29f560b6ee1bb 100644
--- a/include/ldap_pvt_thread.h
+++ b/include/ldap_pvt_thread.h
@@ -43,7 +43,7 @@ ldap_pvt_thread_set_concurrency LDAP_P(( int ));
 
 #ifndef LDAP_PVT_THREAD_STACK_SIZE
 	/* larger stack */
-#define LDAP_PVT_THREAD_STACK_SIZE	(2*1024*1024)
+#define LDAP_PVT_THREAD_STACK_SIZE	(1*1024*1024)
 #endif
 
 LDAP_F( int )