diff --git a/src/hardware/fx2lafw/api.c b/src/hardware/fx2lafw/api.c
index e0a11a5b..dc085266 100644
--- a/src/hardware/fx2lafw/api.c
+++ b/src/hardware/fx2lafw/api.c
@@ -541,6 +541,8 @@ static int config_list(uint32_t key, GVariant **data,
 	switch (key) {
 	case SR_CONF_SCAN_OPTIONS:
 	case SR_CONF_DEVICE_OPTIONS:
+		if (cg)
+			return SR_ERR_NA;
 		return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 	case SR_CONF_SAMPLERATE:
 		if (!devc)