1 files changed, 2 insertions, 1 deletions
diff --git a/priv/templates/extended_bin b/priv/templates/extended_bin
index 1b619d4..87128b7 100755
--- a/priv/templates/extended_bin
+++ b/priv/templates/extended_bin
@@ -229,7 +229,8 @@ replace_os_vars() {
     awk '{
         while(match($0,"[$]{[^}]*}")) {
             var=substr($0,RSTART+2,RLENGTH -3)
-            gsub("[$]{"var"}",ENVIRON[var])
+            if (ENVIRON[var]) gsub("[$]{"var"}",ENVIRON[var]);
+            else next
         }
     }1' < "$1" > "$2"
 }