diff --git a/install.sh b/install.sh
index 6b45c81..adf39f3 100755
--- a/install.sh
+++ b/install.sh
@@ -116,7 +116,7 @@ if [[ $GET_PROTON -eq 1 ]] then
         tar -xf $tarball_name -C $STEAM_CUTOM_PROTON_PATH
         echo "Done"
 
-        PROTON_PATH="${$STEAM_CUTOM_PROTON_PATH/.tar.gz/}"
+        PROTON_PATH="$STEAM_CUTOM_PROTON_PATH/${$tarball_name/.tar.gz/}"
 
         echo "Verifying existence of Proton"
         if [[ -x "$PROTON_PATH/proton" ]] then