diff --git a/appveyor.yml b/appveyor.yml
index 9e9ca96..f382397 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -38,6 +38,6 @@ build_script:
   - cmake --build . --config %configuration%
 
 test_script:
-  # strip_flags_binary test currently fails on AppVeyor
-  - ctest -C %configuration%
-    -E strip_flags_binary
+  # strip_flags_binary test currently fails on AppVeyor in Debug configuration.
+  - IF %configuration%==Debug SET GFLAGS_EXCLUDED_TESTS=strip_flags_binary
+  - ctest -C %configuration% -E %GFLAGS_EXCLUDED_TESTS%