diff --git a/re2/re2.h b/re2/re2.h
index 3e800b663..15ef0b3f7 100644
--- a/re2/re2.h
+++ b/re2/re2.h
@@ -827,7 +827,7 @@ class RE2::Arg {
       re2_internal::Parse4ary<T>::value,
       int>::type;
 
-#if !defined(__clang__) && defined(_MSC_VER)
+#if !defined(_MSC_VER)
   template <typename T>
   using CanParseFrom = typename std::enable_if<
       std::is_member_function_pointer<decltype(
@@ -845,7 +845,7 @@ class RE2::Arg {
   template <typename T, CanParse4ary<T> = 0>
   Arg(T* ptr) : arg_(ptr), parser_(DoParse4ary<T>) {}
 
-#if !defined(__clang__) && defined(_MSC_VER)
+#if !defined(_MSC_VER)
   template <typename T, CanParseFrom<T> = 0>
   Arg(T* ptr) : arg_(ptr), parser_(DoParseFrom<T>) {}
 #endif
@@ -874,7 +874,7 @@ class RE2::Arg {
     return re2_internal::Parse(str, n, reinterpret_cast<T*>(dest), 10);
   }
 
-#if !defined(__clang__) && defined(_MSC_VER)
+#if !defined(_MSC_VER)
   template <typename T>
   static bool DoParseFrom(const char* str, size_t n, void* dest) {
     if (dest == NULL) return true;
diff --git a/re2/testing/re2_arg_test.cc b/re2/testing/re2_arg_test.cc
index 5d64201e1..f62e17cf4 100644
--- a/re2/testing/re2_arg_test.cc
+++ b/re2/testing/re2_arg_test.cc
@@ -134,7 +134,7 @@ TEST(RE2ArgTest, Uint64Test) {
 }
 
 TEST(RE2ArgTest, ParseFromTest) {
-#if !defined(__clang__) && defined(_MSC_VER)
+#if !defined(_MSC_VER)
   struct {
     bool ParseFrom(const char* str, size_t n) {
       LOG(INFO) << "str = " << str << ", n = " << n;