diff --git a/src/scan.c b/src/scan.c
index 6886fbb7..790232bb 100644
--- a/src/scan.c
+++ b/src/scan.c
@@ -1809,6 +1809,14 @@ void scan_freq_set_merge(struct scan_freq_set *to,
 							to->channels_5ghz);
 }
 
+bool scan_freq_set_isempty(const struct scan_freq_set *set)
+{
+	if (set->channels_2ghz == 0 && l_uintset_isempty(set->channels_5ghz))
+		return true;
+
+	return false;
+}
+
 struct channels_5ghz_foreach_data {
 	scan_freq_set_func_t func;
 	void *user_data;
diff --git a/src/scan.h b/src/scan.h
index d2c336b8..dabce95f 100644
--- a/src/scan.h
+++ b/src/scan.h
@@ -137,6 +137,7 @@ void scan_freq_set_merge(struct scan_freq_set *to,
 					const struct scan_freq_set *from);
 void scan_freq_set_constrain(struct scan_freq_set *set,
 					const struct scan_freq_set *constraint);
+bool scan_freq_set_isempty(const struct scan_freq_set *set);
 
 bool scan_wdev_add(uint64_t wdev_id);
 bool scan_wdev_remove(uint64_t wdev_id);