diff --git a/src/domain-services/flows/flow-search-service.ts b/src/domain-services/flows/flow-search-service.ts
index 36fbc4e8..87015737 100644
--- a/src/domain-services/flows/flow-search-service.ts
+++ b/src/domain-services/flows/flow-search-service.ts
@@ -76,10 +76,9 @@ export class FlowSearchService {
 
     const orderBy: FlowOrderBy = this.buildOrderBy(sortField, sortOrder);
 
-    const {
-      flowFilters,
-      flowObjectFilters,
-      flowCategoryFilters,
+    const { flowFilters, flowObjectFilters, flowCategoryFilters } = filters;
+
+    let {
       pending: isPendingFlows,
       commitment: isCommitmentFlows,
       paid: isPaidFlows,
@@ -90,6 +89,16 @@ export class FlowSearchService {
       standard: isStandardFlows,
     } = filters;
 
+    // plain map from undefined to null
+    isPendingFlows = isPendingFlows ?? null;
+    isCommitmentFlows = isCommitmentFlows ?? null;
+    isPaidFlows = isPaidFlows ?? null;
+    isPledgedFlows = isPledgedFlows ?? null;
+    isCarryoverFlows = isCarryoverFlows ?? null;
+    isParkedFlows = isParkedFlows ?? null;
+    isPassThroughFlows = isPassThroughFlows ?? null;
+    isStandardFlows = isStandardFlows ?? null;
+
     // Once we've gathered all the filters, we need to determine the strategy
     // to use in order to obtain the flowIDs
     const strategy: FlowSearchStrategy = this.determineStrategy(