diff --git a/src/scan.c b/src/scan.c
index 1a2e8a62..df163e00 100644
--- a/src/scan.c
+++ b/src/scan.c
@@ -393,7 +393,7 @@ static struct scan_bss *scan_parse_result(struct l_genl_msg *msg,
 	return bss;
 }
 
-void scan_bss_compute_rank(struct scan_bss *bss)
+static void scan_bss_compute_rank(struct scan_bss *bss)
 {
 	static const double RANK_RSNE_FACTOR = 1.2;
 	static const double RANK_WPA_FACTOR = 1.0;
diff --git a/src/scan.h b/src/scan.h
index a3b8ee54..53c53370 100644
--- a/src/scan.h
+++ b/src/scan.h
@@ -66,7 +66,6 @@ void scan_sched_start(struct l_genl_family *nl80211, uint32_t ifindex,
 enum scan_ssid_security scan_get_ssid_security(enum ie_bss_capability bss_cap,
 						const struct ie_rsn_info *info);
 void scan_bss_free(struct scan_bss *bss);
-void scan_bss_compute_rank(struct scan_bss *bss);
 int scan_bss_rank_compare(const void *a, const void *b, void *user);
 
 void bss_get_supported_ciphers(struct scan_bss *bss,