diff --git a/ext/opcache/ZendAccelerator.c b/ext/opcache/ZendAccelerator.c
index 4df75049e172..e56904d7efb8 100644
--- a/ext/opcache/ZendAccelerator.c
+++ b/ext/opcache/ZendAccelerator.c
@@ -1517,10 +1517,10 @@ static void zend_accel_add_key(zend_string *key, zend_accel_hash_entry *bucket)
 	}
 }
 
+/* Must perform the same check as phar_compile_file(). */
 static zend_always_inline bool is_phar_file(zend_string *filename)
 {
-	return filename && ZSTR_LEN(filename) >= sizeof(".phar") &&
-		!memcmp(ZSTR_VAL(filename) + ZSTR_LEN(filename) - (sizeof(".phar")-1), ".phar", sizeof(".phar")-1) &&
+	return filename && strstr(ZSTR_VAL(filename), ".phar") &&
 		!strstr(ZSTR_VAL(filename), "://");
 }
 
diff --git a/ext/opcache/tests/issue0149.phpt b/ext/opcache/tests/issue0149.phpt
index 29e6f02808a7..20fe7636ff08 100644
--- a/ext/opcache/tests/issue0149.phpt
+++ b/ext/opcache/tests/issue0149.phpt
@@ -22,7 +22,7 @@ unset($p);
 
 include "php_cli_server.inc";
 
-$ini = '-d opcache.enable=1 -d opcache.enable_cli=1';
+$ini = '-d opcache.enable=1 -d opcache.enable_cli=1 -d opcache.file_update_protection=0';
 if (file_exists(ini_get('extension_dir').'/phar.'.PHP_SHLIB_SUFFIX)) {
     $ini .= ' -d extension=phar.'.PHP_SHLIB_SUFFIX;
 }