diff --git a/libbb/kernel_version.c b/libbb/kernel_version.c
index 738ed022b..9b6c62299 100644
--- a/libbb/kernel_version.c
+++ b/libbb/kernel_version.c
@@ -20,16 +20,16 @@
 int FAST_FUNC get_linux_version_code(void)
 {
 	struct utsname name;
-	char *s, *t;
+	char *t;
 	int i, r;
 
 	uname(&name); /* never fails */
-	s = name.release;
+	t = name.release;
 	r = 0;
 	for (i = 0; i < 3; i++) {
-		t = strtok(s, ".");
+		t = strtok(t, ".");
 		r = r * 256 + (t ? atoi(t) : 0);
-		s = NULL;
+		t = NULL;
 	}
 	return r;
 }
diff --git a/shell/ash.c b/shell/ash.c
index 8a1628e81..17121aa9b 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -2556,7 +2556,7 @@ updatepwd(const char *dir)
 			new = stack_putstr(p, new);
 			USTPUTC('/', new);
 		}
-		p = strtok(0, "/");
+		p = strtok(NULL, "/");
 	}
 	if (new > lim)
 		STUNPUTC(new);