diff --git a/join.c b/join.c
index ab6fff3..cdfdb1f 100644
--- a/join.c
+++ b/join.c
@@ -60,9 +60,6 @@ static int pairs = 1;
 static size_t seplen;
 static struct outlist output;
 
-char *argv0;
-
-
 static void
 usage(void)
 {