diff --git a/src/components/script/dom/bindings/str.rs b/src/components/script/dom/bindings/str.rs
index 09b327dafa1..b42845b6e77 100644
--- a/src/components/script/dom/bindings/str.rs
+++ b/src/components/script/dom/bindings/str.rs
@@ -139,4 +139,4 @@ impl FromStr for ByteString {
     fn from_str(s: &str) -> Option<ByteString> {
         Some(ByteString::new(s.container_into_owned_bytes()))
     }
-}
\ No newline at end of file
+}
diff --git a/src/components/script/dom/file.rs b/src/components/script/dom/file.rs
index ecaee0976f9..731f76770be 100644
--- a/src/components/script/dom/file.rs
+++ b/src/components/script/dom/file.rs
@@ -50,4 +50,4 @@ impl Reflectable for File {
     fn reflector<'a>(&'a self) -> &'a Reflector {
         self.blob.reflector()
     }
-}
\ No newline at end of file
+}
diff --git a/src/components/script/dom/urlsearchparams.rs b/src/components/script/dom/urlsearchparams.rs
index 0455cc673a7..862945c1e03 100644
--- a/src/components/script/dom/urlsearchparams.rs
+++ b/src/components/script/dom/urlsearchparams.rs
@@ -151,4 +151,4 @@ impl URLSearchParamsHelpers for URLSearchParams {
         // XXXManishearth Implement this when the URL interface is implemented
         // http://url.spec.whatwg.org/#concept-uq-update
     }
-}
\ No newline at end of file
+}
diff --git a/src/etc/tidy.py b/src/etc/tidy.py
index c0cdb1eb433..c49bdf657e9 100644
--- a/src/etc/tidy.py
+++ b/src/etc/tidy.py
@@ -31,6 +31,9 @@ def do_whitespace_check(name, contents):
     for idx, line in enumerate(contents):
         if line[-1] == "\n":
             line = line[:-1]
+        else:
+            report_error_name_no(name, idx + 1, "No newline at EOF")
+
         if line.endswith(' '):
             report_error_name_no(name, idx + 1, "trailing whitespace")