diff --git a/appveyor.yml b/appveyor.yml
index 412699f..babc307 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -35,7 +35,7 @@ environment:
     UBP: 1
     PATH: C:\mingw-w64\x86_64-7.2.0-posix-seh-rt_v5-rev1\mingw64\bin;%PATH%
     TOOLSET: gcc
-    GENERATOR: Ninja
+    GENERATOR: MinGW Makefiles
   - LIB: headers
     TOOLSET: msvc-14.1
   - LIB: iostreams