diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index 92cfe8e..07fad7c 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -83,9 +83,9 @@
 int x25_addr_ntoa(unsigned char *p, struct x25_address *called_addr,
 		  struct x25_address *calling_addr)
 {
-	int called_len, calling_len;
+	unsigned int called_len, calling_len;
 	char *called, *calling;
-	int i;
+	unsigned int i;
 
 	called_len  = (*p >> 0) & 0x0F;
 	calling_len = (*p >> 4) & 0x0F;