diff --git a/src/collections/hash_map/extend.rs b/src/collections/hash_map/extend.rs
index d7ca2b94..c34bb9ed 100644
--- a/src/collections/hash_map/extend.rs
+++ b/src/collections/hash_map/extend.rs
@@ -24,9 +24,9 @@ where
         // the map will only resize twice in the worst case.
 
         let additional = if self.is_empty() {
-           stream.size_hint().0
+            stream.size_hint().0
         } else {
-           (stream.size_hint().0 + 1) / 2
+            (stream.size_hint().0 + 1) / 2
         };
         self.reserve(additional);
 
diff --git a/src/collections/hash_set/extend.rs b/src/collections/hash_set/extend.rs
index e10cb3c6..123e844e 100644
--- a/src/collections/hash_set/extend.rs
+++ b/src/collections/hash_set/extend.rs
@@ -27,9 +27,9 @@ where
         // the map will only resize twice in the worst case.
 
         let additional = if self.is_empty() {
-           stream.size_hint().0
+            stream.size_hint().0
         } else {
-           (stream.size_hint().0 + 1) / 2
+            (stream.size_hint().0 + 1) / 2
         };
         self.reserve(additional);