diff --git a/src/plugins/accounting_storage/pgsql/rollup.c b/src/plugins/accounting_storage/pgsql/rollup.c
index 962f98da8648c087918619076813801441134ced..7000172f32cf8ebc95ee786e0e6fb9d2fbda9e0c 100644
--- a/src/plugins/accounting_storage/pgsql/rollup.c
+++ b/src/plugins/accounting_storage/pgsql/rollup.c
@@ -583,7 +583,7 @@ _process_resv_idle_time(List resv_usage_list, List assoc_usage_list)
 {
 	ListIterator r_itr;
 	local_resv_usage_t *r_usage;
-	local_id_usage_t *a_usage;
+	local_id_usage_t *a_usage = NULL;
 	int seconds;
 	int last_id = -1;