diff --git a/ext/standard/proc_open.c b/ext/standard/proc_open.c
index 046581ebf15..7cca8a5ac42 100644
--- a/ext/standard/proc_open.c
+++ b/ext/standard/proc_open.c
@@ -216,7 +216,7 @@ PHP_FUNCTION(proc_get_status)
 	array_init(return_value);
 
 	add_assoc_string(return_value, "command", proc->command, 1);
-	add_assoc_long(return_value, "pid", proc->child);
+	add_assoc_long(return_value, "pid", (long) proc->child);
 	
 #ifdef PHP_WIN32