diff --git a/audiogame-manager.sh b/audiogame-manager.sh
index 1851937..69fdf4b 100755
--- a/audiogame-manager.sh
+++ b/audiogame-manager.sh
@@ -1422,6 +1422,8 @@ while getopts "${args}" i ; do
 done
 
 # Install game based on the selection above.
+# make sure wine is actually set to something
+export wine="${wine:-wine}"
 case "${game}" in
     "A Hero's Call")
         download "https://blindgamers.com/downloads/a-heros-call-freeware.zip" "${nvdaControllerClientDll}"