1 files changed, 1 insertions, 1 deletions
diff --git a/output.c b/output.c
index 886ba87a17..e1bf28b409 100644
--- a/output.c
+++ b/output.c
@@ -43,7 +43,7 @@ static int header_request;
  * Main
  */
 
-void zend_output_startup()
+PHPAPI void zend_output_startup()
 {
 	ob_buffer = NULL;
 	zend_body_write = zend_ub_body_write;