diff --git a/example/libusb/gap_inquiry.c b/example/libusb/gap_inquiry.c
index 8ab5060e9..6bc766e4e 100644
--- a/example/libusb/gap_inquiry.c
+++ b/example/libusb/gap_inquiry.c
@@ -88,7 +88,7 @@ static void packet_handler (uint8_t packet_type, uint8_t *packet, uint16_t size)
     bd_addr_t addr;
     int i;
     int numResponses;
-    index;
+    int index;
     
     // printf("packet_handler: pt: 0x%02x, packet[0]: 0x%02x\n", packet_type, packet[0]);
     if (packet_type != HCI_EVENT_PACKET) return;