diff --git a/ext/zend_test/test.c b/ext/zend_test/test.c
index bcc3351e0331..1d4c14dd07e3 100644
--- a/ext/zend_test/test.c
+++ b/ext/zend_test/test.c
@@ -243,7 +243,7 @@ static ZEND_FUNCTION(zend_test_compile_string)
 
 	ZEND_PARSE_PARAMETERS_START(3, 3)
 		Z_PARAM_STR(source_string)
-		Z_PARAM_STR(filename)
+		Z_PARAM_PATH_STR_EX(filename, 1, 0)
 		Z_PARAM_LONG(position)
 	ZEND_PARSE_PARAMETERS_END();
 
diff --git a/ext/zend_test/tests/zend_test_compile_string.phpt b/ext/zend_test/tests/zend_test_compile_string.phpt
index f2449d86ffa2..c03c46b0100d 100644
--- a/ext/zend_test/tests/zend_test_compile_string.phpt
+++ b/ext/zend_test/tests/zend_test_compile_string.phpt
@@ -38,12 +38,25 @@ EOF;
 
 zend_test_compile_string($source_string, 'Source string', ZEND_COMPILE_POSITION_AFTER_OPEN_TAG);
 
+$source_string = <<<EOF
+<?php
+var_dump('php');
+EOF;
+
+try {
+	zend_test_compile_string($source_string, "Sources\0string", ZEND_COMPILE_POSITION_AT_OPEN_TAG);
+} catch (\ValueError $e) {
+	echo $e->getMessage(), PHP_EOL;
+}
+
+
 $source_string = <<<EOF
 <?php
 var_dump('php');
 EOF;
 
 zend_test_compile_string($source_string, 'Source string', ZEND_COMPILE_POSITION_AFTER_OPEN_TAG);
+
 ?>
 --EXPECT--
 string(3) "php"
@@ -51,5 +64,6 @@ string(3) "php"
 string(3) "php"
 string(3) "php"
 string(3) "php"
+zend_test_compile_string(): Argument #2 ($filename) must not contain any null bytes
 
 Parse error: syntax error, unexpected token "<", expecting end of file in Source string on line 1