diff --git a/crates/vite_path/src/relative.rs b/crates/vite_path/src/relative.rs
index 271f9d5731..39f63228d0 100644
--- a/crates/vite_path/src/relative.rs
+++ b/crates/vite_path/src/relative.rs
@@ -323,6 +323,14 @@ mod tests {
         assert_eq!(rel_path.as_str(), "foo/bar");
     }
 
+    #[test]
+    fn normalize_filenames() {
+        let rel_path = RelativePathBuf::new("foo").unwrap();
+        assert_eq!(rel_path.as_str(), "foo");
+        let rel_path = RelativePathBuf::new("foo.json").unwrap();
+        assert_eq!(rel_path.as_str(), "foo.json");
+    }
+
     #[test]
     fn normalize_dots() {
         let rel_path = RelativePathBuf::new("./foo/./bar/.").unwrap();