diff --git a/appveyor.yml b/appveyor.yml
index cdb34d3f..e33f5700 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -5,7 +5,9 @@ environment:
   - CMAKE_GENERATOR: Visual Studio 12 2013
   - CMAKE_GENERATOR: Visual Studio 11 2012
   - CMAKE_GENERATOR: Visual Studio 10 2010
-  - CMAKE_GENERATOR: MinGW Makefiles
+#  - CMAKE_GENERATOR: MinGW Makefiles
+# Note: Disabled because of unexplicated error -1073741511
+# This used to work fine with GCC 4.8.2 then failed after they upgraded to GCC 4.9.3
 configuration: Debug
 before_build:
 - set PATH=C:\MinGW\bin;%PATH:C:\Program Files\Git\usr\bin;=% # Workaround for CMake not wanting sh.exe on PATH for MinGW