diff --git a/device_mapper/libdm-config.c b/device_mapper/libdm-config.c
index b57a6de7d..de614616a 100644
--- a/device_mapper/libdm-config.c
+++ b/device_mapper/libdm-config.c
@@ -1418,7 +1418,8 @@ static struct dm_config_value *_clone_config_value(struct dm_pool *mem,
 
 	if (v->type == DM_CFG_STRING) {
 		if (!(new_cv = _create_str_value(mem, v->v.str, strlen(v->v.str)))) {
-
+			log_error("Failed to clone string config value.");
+			return NULL;
 		}
 	} else {
 		if (!(new_cv = _create_value(mem))) {
diff --git a/libdm/libdm-config.c b/libdm/libdm-config.c
index 682d2b00d..c75e447cb 100644
--- a/libdm/libdm-config.c
+++ b/libdm/libdm-config.c
@@ -1418,7 +1418,8 @@ static struct dm_config_value *_clone_config_value(struct dm_pool *mem,
 
 	if (v->type == DM_CFG_STRING) {
 		if (!(new_cv = _create_str_value(mem, v->v.str, strlen(v->v.str)))) {
-
+			log_error("Failed to clone string config value.");
+			return NULL;
 		}
 	} else {
 		if (!(new_cv = _create_value(mem))) {