diff --git a/data_provider.rs b/data_provider.rs
index d4268e9..394ab9e 100644
--- a/data_provider.rs
+++ b/data_provider.rs
@@ -19,7 +19,12 @@ pub type CGDataProviderRef = *__CGDataProvider;
 
 pub impl CGDataProviderRef : AbstractCFTypeRef {
     pure fn as_type_ref(&self) -> CFTypeRef { *self as CFTypeRef }
-    static pure fn type_id() -> CFTypeID { unsafe { CGDataProviderGetTypeID() } }
+
+    static pure fn type_id() -> CFTypeID {
+        unsafe {
+            CGDataProviderGetTypeID()
+        }
+    }
 }
 
 pub type CGDataProvider = CFWrapper<CGDataProviderRef, (), ()>;
diff --git a/font.rs b/font.rs
index 5f504d5..bc8b948 100644
--- a/font.rs
+++ b/font.rs
@@ -11,14 +11,19 @@ pub type CGFontRef = *__CGFont;
 
 pub impl CGFontRef : AbstractCFTypeRef {
     pure fn as_type_ref(&self) -> CFTypeRef { *self as CFTypeRef }
-    static pure fn type_id() -> CFTypeID { unsafe { CGFontGetTypeID() } }
+
+    static pure fn type_id() -> CFTypeID {
+        unsafe {
+            CGFontGetTypeID()
+        }
+    }
 }
 
 pub type CGFont = CFWrapper<CGFontRef, (), ()>;
 
 pub fn create_with_data_provider(provider: &CGDataProvider) -> CGFont {
+    // TODO: error handling
     unsafe {
-        // TODO: error handling
         let value = CGFontCreateWithDataProvider(*provider.borrow_ref());
         CFWrapper::wrap_owned(value)
     }