1 files changed, 1 insertions, 1 deletions
diff --git a/arg.h b/arg.h
index f81a0b0..09a5350 100644
--- a/arg.h
+++ b/arg.h
@@ -10,7 +10,7 @@ extern char *argv0;
 
 /* use main(int argc, char *argv[]) */
 #define ARGBEGIN	for (argv0 = *argv, argv++, argc--;\
-					argv[0] && argv[0][1];\
+					argv[0] && argv[0][0] && argv[0][1];\
 					argc--, argv++) {\
 				char argc_;\
 				char **argv_;\