diff --git a/CI/build.msvc.sh b/CI/build.msvc.sh
index 101aa8827..b19325689 100644
--- a/CI/build.msvc.sh
+++ b/CI/build.msvc.sh
@@ -1,22 +1,17 @@
 #!/bin/bash
 
-while [ $# -gt 0 ]; do
-	ARG=$1
-	shift
+case $1 in
+	x86|i686|win32 )
+		BITS=32 ;;
 
-	case $ARG in
-		x86|i686|win32 )
-			BITS=32 ;;
+	x64_64|x64|win64 )
+		BITS=64 ;;
 
-		x64_64|x64|win64 )
-			BITS=64 ;;
-
-		* )
-			echo "Unknown arg $ARG."
-			exit 1 ;;
-	esac
-done
+	* )
+		echo "Unknown platform $ARG."
+		exit 1 ;;
+esac
 
 cd $(dirname $0)/../build_$BITS
 
-msbuild OpenMW.sln //t:Build //p:Configuration=Release //m:8 //logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
+msbuild OpenMW.sln //t:Build //p:Configuration=$2 //m:8 //logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
diff --git a/appveyor.yml b/appveyor.yml
index 399be0c38..896c0b464 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -4,6 +4,10 @@ platform:
     - Win32
     - x64
 
+configuration:
+    - Debug
+    - Release
+
 matrix:
     fast_finish: true
 
@@ -13,8 +17,8 @@ init:
 
 clone_folder: C:\projects\openmw
 
-build:
-    - cmd: sh C:\projects\openmw\CI\build.msvc.sh %platform%
+build_script:
+    - cmd: sh C:\projects\openmw\CI\build.msvc.sh %platform% %configuration%
 
 before_build:
     - cmd: sh C:\projects\openmw\CI\before_script.msvc.sh %platform%