diff --git a/vlib/os/os.v b/vlib/os/os.v
index 2dcda1127d..b44a564f7b 100644
--- a/vlib/os/os.v
+++ b/vlib/os/os.v
@@ -417,6 +417,9 @@ pub fn is_file(path string) bool {
 
 // is_abs_path returns `true` if `path` is absolute.
 pub fn is_abs_path(path string) bool {
+	if path.len == 0 {
+		return false
+	}
 	$if windows {
 		return path[0] == `/` || // incase we're in MingGW bash
 		(path[0].is_letter() && path[1] == `:`)