diff --git a/appl/su/su.c b/appl/su/su.c
index 8e815af0a..697a262a3 100644
--- a/appl/su/su.c
+++ b/appl/su/su.c
@@ -458,7 +458,7 @@ main(int argc, char **argv)
 	    for (j = 0; j < i; j++) {
 		char *p = strchr(newenv[j], '=');
 		if (p == NULL)
-		    errx(1, "environment '%s' missing '='", newenv[j]);
+		    errx(1, "enviroment '%s' missing '='", newenv[j]);
 		*p++ = 0;
 		esetenv (newenv[j], p, 1);
 	    }