diff --git a/x-pack/legacy/plugins/infra/server/lib/adapters/log_entries/kibana_log_entries_adapter.ts b/x-pack/legacy/plugins/infra/server/lib/adapters/log_entries/kibana_log_entries_adapter.ts
index 48c3e901bb9e2..72169f4277794 100644
--- a/x-pack/legacy/plugins/infra/server/lib/adapters/log_entries/kibana_log_entries_adapter.ts
+++ b/x-pack/legacy/plugins/infra/server/lib/adapters/log_entries/kibana_log_entries_adapter.ts
@@ -104,7 +104,7 @@ export class InfraKibanaLogEntriesAdapter implements LogEntriesAdapter {
       index: sourceConfiguration.logAlias,
       ignoreUnavailable: true,
       body: {
-        size: size ? size : LOG_ENTRIES_PAGE_SIZE,
+        size: typeof size !== 'undefined' ? size : LOG_ENTRIES_PAGE_SIZE,
         track_total_hits: false,
         query: {
           bool: {