diff --git a/src/EnvironmentParserTest.cpp b/src/EnvironmentParserTest.cpp
index b75b1f1..849ccf4 100644
--- a/src/EnvironmentParserTest.cpp
+++ b/src/EnvironmentParserTest.cpp
@@ -26,8 +26,7 @@ TEST_F(EnvironmentParserTest, returnsValueIfEnvVariableExists)
     const auto expectedEnvValue = "test";
 
 #if defined(_WIN32) || defined(__MINGW32__) || defined(__MINGW64__)
-    const std::string envNameWithEquals = envName + "=" + expectedEnvValue;
-    _putenv_s(envNameWithEquals.c_str());
+    _putenv_s("CONFIG_CXX_TEST_PATH=test");
 #else
     setenv(envName, expectedEnvValue, 1);
 #endif