--- a/servo/components/style/properties/properties.mako.rs
+++ b/servo/components/style/properties/properties.mako.rs
@@ -93,17 +93,17 @@ macro_rules! expanded {
         }
     }
 }
 
 /// A module with all the code for longhand properties.
 #[allow(missing_docs)]
 pub mod longhands {
     % for style_struct in data.style_structs:
-    include!("${os.path.join(OUT_DIR, 'longhands/{}.rs'.format(style_struct.name_lower))}");
+    include!("${repr(os.path.join(OUT_DIR, 'longhands/{}.rs'.format(style_struct.name_lower)))[1:-1]}");
     % endfor
 }
 
 macro_rules! unwrap_or_initial {
     ($prop: ident) => (unwrap_or_initial!($prop, $prop));
     ($prop: ident, $expr: expr) =>
         ($expr.unwrap_or_else(|| $prop::get_initial_specified_value()));
 }
@@ -139,17 +139,17 @@ pub mod shorthands {
         if *color != Color::CurrentColor {
             dest.write_str(" ")?;
             color.to_css(dest)?;
         }
         Ok(())
     }
 
     % for style_struct in data.style_structs:
-    include!("${os.path.join(OUT_DIR, 'shorthands/{}.rs'.format(style_struct.name_lower))}");
+    include!("${repr(os.path.join(OUT_DIR, 'shorthands/{}.rs'.format(style_struct.name_lower)))[1:-1]}");
     % endfor
 
     // We didn't define the 'all' shorthand using the regular helpers:shorthand
     // mechanism, since it causes some very large types to be generated.
     //
     // Also, make sure logical properties appear before its physical
     // counter-parts, in order to prevent bugs like:
     //