diff --git a/recipes/gtest/all/conanfile.py b/recipes/gtest/all/conanfile.py
index 73a3153cc50ea..41d338cbe9c9b 100644
--- a/recipes/gtest/all/conanfile.py
+++ b/recipes/gtest/all/conanfile.py
@@ -144,8 +144,8 @@ def generate(self):
         try:
            check_min_vs(self, "191")
         except ConanInvalidConfiguration:
-            tc.preprocessor_definitions["GTEST_LANG_CXX11"] = True
-            tc.preprocessor_definitions["GTEST_HAS_TR1_TUPLE"] = False
+            tc.preprocessor_definitions["GTEST_LANG_CXX11"] = 1
+            tc.preprocessor_definitions["GTEST_HAS_TR1_TUPLE"] = 0
             
         tc.cache_variables["BUILD_GMOCK"] = bool(self.options.build_gmock)
         if self.settings.os == "Windows" and self.settings.compiler == "gcc":