diff --git a/parallel_hashmap/phmap_base.h b/parallel_hashmap/phmap_base.h
index 1f687b2..7c42d6f 100644
--- a/parallel_hashmap/phmap_base.h
+++ b/parallel_hashmap/phmap_base.h
@@ -1264,7 +1264,7 @@ struct MakeUniqueResult<T[N]> {
 }  // namespace memory_internal
 
 #if (__cplusplus > 201103L || defined(_MSC_VER)) && \
-    !(defined(__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ == 8) && 
+    !(defined(__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ == 8) && \
     !(defined (__GLIBCXX__) && __GLIBCXX__ <= 20141030)
     using std::make_unique;
 #else