diff --git a/src/components/main/css/matching.rs b/src/components/main/css/matching.rs
index 2c3db7894a5..312deb89bd1 100644
--- a/src/components/main/css/matching.rs
+++ b/src/components/main/css/matching.rs
@@ -131,7 +131,7 @@ impl<'a> Hash for ApplicableDeclarationsCacheQuery<'a> {
 static APPLICABLE_DECLARATIONS_CACHE_SIZE: uint = 32;
 
 pub struct ApplicableDeclarationsCache {
-    pub cache: SimpleHashCache<ApplicableDeclarationsCacheEntry,Arc<ComputedValues>>,
+    cache: SimpleHashCache<ApplicableDeclarationsCacheEntry,Arc<ComputedValues>>,
 }
 
 impl ApplicableDeclarationsCache {
@@ -149,7 +149,7 @@ impl ApplicableDeclarationsCache {
     }
 
     fn insert(&mut self, declarations: &[MatchedProperty], style: Arc<ComputedValues>) {
-        drop(self.cache.insert(ApplicableDeclarationsCacheEntry::new(declarations), style))
+        self.cache.insert(ApplicableDeclarationsCacheEntry::new(declarations), style)
     }
 }
 
diff --git a/src/components/util/cache.rs b/src/components/util/cache.rs
index 043d0c2b0d7..768b015bc44 100644
--- a/src/components/util/cache.rs
+++ b/src/components/util/cache.rs
@@ -216,7 +216,7 @@ impl<K:Clone+Eq+Hash,V:Clone> SimpleHashCache<K,V> {
 impl<K:Clone+Eq+Hash,V:Clone> Cache<K,V> for SimpleHashCache<K,V> {
     fn insert(&mut self, key: K, value: V) {
         let bucket_index = self.bucket_for_key(&key);
-        *self.entries.get_mut(bucket_index) = Some((key, value))
+        *self.entries.get_mut(bucket_index) = Some((key, value));
     }
 
     fn find(&mut self, key: &K) -> Option<V> {