1 files changed, 1 insertions, 1 deletions
diff --git a/games/drakon.awk b/games/drakon.awk
index ce619585..ebca4e95 100644
--- a/games/drakon.awk
+++ b/games/drakon.awk
@@ -6,7 +6,7 @@
     tog = 0
     for (i = 1; i <= len; i++) {
         chr = substr($0, i, 1)
-        if (chr ~ /[[:alpha:]]/)
+        if (chr ~ /[a-zA-Z]/)
             chr = (tog = !tog) ? tolower(chr) : toupper(chr)
         lin = lin chr
     }