diff --git a/googlemock/src/gmock-internal-utils.cc b/googlemock/src/gmock-internal-utils.cc
index 20c5a8db..3fca3f26 100644
--- a/googlemock/src/gmock-internal-utils.cc
+++ b/googlemock/src/gmock-internal-utils.cc
@@ -188,7 +188,7 @@ GTEST_API_ void Log(LogSeverity severity, const std::string& message,
   std::cout << ::std::flush;
 }
 
-void IllegalDoDefault(const char* file, int line) {
+GTEST_API_ void IllegalDoDefault(const char* file, int line) {
   internal::Assert(
       false, file, line,
       "You are using DoDefault() inside a composite action like "