diff --git a/appveyor.yml b/appveyor.yml
index d499861..cc0d256 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -3,7 +3,7 @@ image: Visual Studio 2017
 
 environment:
   matrix:
-    # - COMPILER: MSVC15
+    - COMPILER: MSVC15
     - COMPILER: MinGW-w64
 
 install: