diff --git a/src/fst/fst.c b/src/fst/fst.c
index a65b41c54..288087021 100644
--- a/src/fst/fst.c
+++ b/src/fst/fst.c
@@ -206,3 +206,20 @@ Boolean fst_are_ifaces_aggregated(struct fst_iface *iface1,
 {
 	return fst_iface_get_group(iface1) == fst_iface_get_group(iface2);
 }
+
+
+enum mb_band_id fst_hw_mode_to_band(enum hostapd_hw_mode mode)
+{
+	switch (mode) {
+	case HOSTAPD_MODE_IEEE80211B:
+	case HOSTAPD_MODE_IEEE80211G:
+		return MB_BAND_ID_WIFI_2_4GHZ;
+	case HOSTAPD_MODE_IEEE80211A:
+		return MB_BAND_ID_WIFI_5GHZ;
+	case HOSTAPD_MODE_IEEE80211AD:
+		return MB_BAND_ID_WIFI_60GHZ;
+	default:
+		WPA_ASSERT(0);
+		return MB_BAND_ID_WIFI_2_4GHZ;
+	}
+}
diff --git a/src/fst/fst_internal.h b/src/fst/fst_internal.h
index d5a875faa..9fe32b854 100644
--- a/src/fst/fst_internal.h
+++ b/src/fst/fst_internal.h
@@ -28,22 +28,7 @@
 	fst_printf_group(fst_iface_get_group(iface), (level), "%s: " format, \
 			 fst_iface_get_name(iface), ##__VA_ARGS__)
 
-static inline enum mb_band_id
-fst_hw_mode_to_band(enum hostapd_hw_mode mode)
-{
-	switch (mode) {
-	case HOSTAPD_MODE_IEEE80211B:
-	case HOSTAPD_MODE_IEEE80211G:
-		return MB_BAND_ID_WIFI_2_4GHZ;
-	case HOSTAPD_MODE_IEEE80211A:
-		return MB_BAND_ID_WIFI_5GHZ;
-	case HOSTAPD_MODE_IEEE80211AD:
-		return MB_BAND_ID_WIFI_60GHZ;
-	default:
-		WPA_ASSERT(0);
-		return MB_BAND_ID_WIFI_2_4GHZ;
-	}
-}
+enum mb_band_id fst_hw_mode_to_band(enum hostapd_hw_mode mode);
 
 struct fst_ctrl_handle {
 	struct fst_ctrl ctrl;