diff --git a/ext/standard/md5.c b/ext/standard/md5.c
index 90215060032..775daf3f27c 100644
--- a/ext/standard/md5.c
+++ b/ext/standard/md5.c
@@ -90,7 +90,7 @@ PHP_NAMED_FUNCTION(php_if_md5_file)
 	}
 
 	if ((fp = VCWD_FOPEN(Z_STRVAL_PP(arg), "rb")) == NULL) {
-		php_error(E_WARNING, "md5_file(): Unable to open file");
+		php_error(E_WARNING, "%s(): Unable to open file", get_active_function_name (TSRMLS_C));
 		RETURN_FALSE;
 	}
 
diff --git a/ext/standard/sha1.c b/ext/standard/sha1.c
index c4ab0d72b08..6ae6ef40f55 100644
--- a/ext/standard/sha1.c
+++ b/ext/standard/sha1.c
@@ -88,7 +88,7 @@ PHP_FUNCTION(sha1_file)
 	}
 
 	if ((fp = VCWD_FOPEN(Z_STRVAL_PP(arg), "rb")) == NULL) {
-		php_error(E_WARNING, "md5_file(): Unable to open file");
+		php_error(E_WARNING, "%s(): Unable to open file", get_active_function_name (TSRMLS_C));
 		RETURN_FALSE;
 	}