diff --git a/tools/arkmanager b/tools/arkmanager
index f455c41..5319c6b 100755
--- a/tools/arkmanager
+++ b/tools/arkmanager
@@ -1037,6 +1037,10 @@ doExtractMod(){
 doInstallMod(){
   local modid=$1
 
+  if [ -f "$steamcmdroot/steamapps/workshop/appworkshop_${mod_appid}.acf" ]; then
+    sed -i "/^\\t\\t\"${modid}\"/,/^\\t\\t}/d" "$steamcmdroot/steamapps/workshop/appworkshop_${mod_appid}.acf"
+  fi
+
   if doDownloadMod $modid; then
     doExtractMod $modid
     echo "Mod $modid installed"