diff --git a/absl/base/casts.h b/absl/base/casts.h
index aba0178..83c6912 100644
--- a/absl/base/casts.h
+++ b/absl/base/casts.h
@@ -34,6 +34,7 @@
 #include "absl/meta/type_traits.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 
 namespace internal_casts {
 
@@ -158,16 +159,19 @@
   return dest;
 }
 
-// NOTE: This overload is only picked if the requirements of bit_cast are not
-// met. It is therefore UB, but is provided temporarily as previous versions of
-// this function template were unchecked. Do not use this in new code.
+// NOTE: This overload is only picked if the requirements of bit_cast are
+// not met. It is therefore UB, but is provided temporarily as previous
+// versions of this function template were unchecked. Do not use this in
+// new code.
 template <
     typename Dest, typename Source,
     typename std::enable_if<
-        !internal_casts::is_bitcastable<Dest, Source>::value, int>::type = 0>
+        !internal_casts::is_bitcastable<Dest, Source>::value,
+        int>::type = 0>
 ABSL_DEPRECATED(
-    "absl::bit_cast type requirements were violated. Update the types being "
-    "used such that they are the same size and are both TriviallyCopyable.")
+    "absl::bit_cast type requirements were violated. Update the types "
+    "being used such that they are the same size and are both "
+    "TriviallyCopyable.")
 inline Dest bit_cast(const Source& source) {
   static_assert(sizeof(Dest) == sizeof(Source),
                 "Source and destination types should have equal sizes.");
@@ -177,6 +181,7 @@
   return dest;
 }
 
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_CASTS_H_