diff --git a/appveyor.yml b/appveyor.yml
index 37c6f02..bb2f24d 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -2,12 +2,15 @@ version: '{branch}-{build}'
 
 environment:
   matrix:
-    - configuration: Debug
-    - configuration: Release
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      MSVC_GENERATOR: Visual Studio 14 2015
+      MSVC_GENERATOR_SHORT: VS2015
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      MSVC_GENERATOR: Visual Studio 15 2017
+      MSVC_GENERATOR_SHORT: VS2017
     
-APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-MSVC_GENERATOR: Visual Studio 15 2017
-MSVC_GENERATOR_SHORT: VS2017
+configuration:
+  - Debug
 
 platform:
   - x64