diff --git a/absl/strings/resize_and_overwrite.h b/absl/strings/resize_and_overwrite.h
index b3bd06e..91df897 100644
--- a/absl/strings/resize_and_overwrite.h
+++ b/absl/strings/resize_and_overwrite.h
@@ -177,8 +177,7 @@
   }
 #endif
 #if defined(ABSL_HAVE_MEMORY_SANITIZER)
-  auto shadow = __msan_test_shadow(str.data(), str.size());
-  ABSL_ASSERT(shadow == -1);
+  __msan_check_mem_is_initialized(str.data(), str.size());
 #endif
 }
 
diff --git a/absl/strings/resize_and_overwrite_test.cc b/absl/strings/resize_and_overwrite_test.cc
index 8adad2c..1070dec 100644
--- a/absl/strings/resize_and_overwrite_test.cc
+++ b/absl/strings/resize_and_overwrite_test.cc
@@ -119,7 +119,8 @@
 
   if (param.initial_size < param.final_size) {
 #ifndef NDEBUG
-    EXPECT_DEATH_IF_SUPPORTED(op(), "shadow == -1");
+    EXPECT_DEATH_IF_SUPPORTED(op(),
+                              "MemorySanitizer: use-of-uninitialized-value");
 #endif
   } else {
     // The string is fully initialized from the initial constructor, or we skip