diff --git a/ext/standard/head.c b/ext/standard/head.c
index 1177bae698e..0acd34c83c4 100644
--- a/ext/standard/head.c
+++ b/ext/standard/head.c
@@ -67,12 +67,12 @@ PHP_FUNCTION(header_remove)
 }
 /* }}} */
 
-PHPAPI int php_header(void)
+PHPAPI bool php_header(void)
 {
 	if (sapi_send_headers()==FAILURE || SG(request_info).headers_only) {
-		return 0; /* don't allow output */
+		return false; /* don't allow output */
 	} else {
-		return 1; /* allow output */
+		return true; /* allow output */
 	}
 }
 
diff --git a/ext/standard/head.h b/ext/standard/head.h
index a891e05b84e..32c2570a532 100644
--- a/ext/standard/head.h
+++ b/ext/standard/head.h
@@ -27,7 +27,7 @@
 
 extern PHP_RINIT_FUNCTION(head);
 
-PHPAPI int php_header(void);
+PHPAPI bool php_header(void);
 PHPAPI zend_result php_setcookie(zend_string *name, zend_string *value, time_t expires,
 	zend_string *path, zend_string *domain, bool secure, bool httponly,
 	zend_string *samesite, bool url_encode);