diff --git a/googletest/include/gtest/internal/gtest-port.h b/googletest/include/gtest/internal/gtest-port.h
index 6f9c14ae..d5eea8e7 100644
--- a/googletest/include/gtest/internal/gtest-port.h
+++ b/googletest/include/gtest/internal/gtest-port.h
@@ -2220,7 +2220,8 @@ using TimeInMillis = int64_t;  // Represents time in milliseconds.
 // Parses 'str' for a 32-bit signed integer.  If successful, writes the result
 // to *value and returns true; otherwise leaves *value unchanged and returns
 // false.
-bool ParseInt32(const Message& src_text, const char* str, int32_t* value);
+GTEST_API_ bool ParseInt32(const Message& src_text, const char* str,
+                           int32_t* value);
 
 // Parses a bool/int32_t/string from the environment variable
 // corresponding to the given Google Test flag.