diff --git a/wpa_supplicant/bss.c b/wpa_supplicant/bss.c
index 943a34081..127f43e5e 100644
--- a/wpa_supplicant/bss.c
+++ b/wpa_supplicant/bss.c
@@ -906,7 +906,7 @@ void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info,
 		}
 	}
 
-	wpa_printf(MSG_DEBUG, "BSS: last_scan_res_used=%u/%u",
+	wpa_printf(MSG_DEBUG, "BSS: last_scan_res_used=%zu/%zu",
 		   wpa_s->last_scan_res_used, wpa_s->last_scan_res_size);
 }
 
diff --git a/wpa_supplicant/wpa_supplicant_i.h b/wpa_supplicant/wpa_supplicant_i.h
index e77ebb8f9..775bce89e 100644
--- a/wpa_supplicant/wpa_supplicant_i.h
+++ b/wpa_supplicant/wpa_supplicant_i.h
@@ -607,8 +607,8 @@ struct wpa_supplicant {
 	  * results.
 	  */
 	struct wpa_bss **last_scan_res;
-	unsigned int last_scan_res_used;
-	unsigned int last_scan_res_size;
+	size_t last_scan_res_used;
+	size_t last_scan_res_size;
 	struct os_reltime last_scan;
 
 	const struct wpa_driver_ops *driver;