diff --git a/.github/workflows/ffmpeg.yml b/.github/workflows/ffmpeg.yml
index d273fa8..47d7e44 100644
--- a/.github/workflows/ffmpeg.yml
+++ b/.github/workflows/ffmpeg.yml
@@ -4,17 +4,19 @@ on:
   workflow_dispatch:
     inputs:
       config:
-        description: 'Configuration'     
-        required: true
-        default: 'Debug'
+        type: choice
+        description: Configuration
+        options: 
+        - Debug
+        - Release
         
 env:
   vsPath: C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\
-  msysConfig: release
-  winConfig: Release
-  cFlags: -MD
   switches: "--enable-libsvtav1 --enable-libsnappy --enable-libvpx --enable-libmp3lame --enable-libzimg --enable-libopus --enable-libvorbis --enable-libx264 --enable-libx265 --enable-libfdk-aac" #--enable-libvpl
   NASM_EXECUTABLE: nasm
+  msysConfig: Debug
+  winConfig: debug
+  cFlags: -MDd
   
 jobs:
   liboggvorbis: