diff --git a/src/scan.c b/src/scan.c
index 8c052640..f5c9f002 100644
--- a/src/scan.c
+++ b/src/scan.c
@@ -83,7 +83,7 @@ void scan_get_results(struct l_genl_family *nl80211, uint32_t ifindex,
 
 enum scan_ssid_security scan_get_ssid_security(
 					enum ie_bss_capability bss_capability,
-					struct ie_rsn_info *info)
+					const struct ie_rsn_info *info)
 {
 	if (bss_capability & IE_BSS_CAP_PRIVACY)
 		return SCAN_SSID_SECURITY_WEP;
diff --git a/src/scan.h b/src/scan.h
index 0ec95c6a..32dcae6a 100644
--- a/src/scan.h
+++ b/src/scan.h
@@ -42,4 +42,4 @@ void scan_get_results(struct l_genl_family *nl80211, uint32_t ifindex,
 			void *user_data);
 
 enum scan_ssid_security scan_get_ssid_security(enum ie_bss_capability bss_cap,
-						struct ie_rsn_info *info);
+						const struct ie_rsn_info *info);