diff --git a/extensions/ql-vscode/src/log-insights/join-order.ts b/extensions/ql-vscode/src/log-insights/join-order.ts
index 788da0a98e6..80bc6fda44e 100644
--- a/extensions/ql-vscode/src/log-insights/join-order.ts
+++ b/extensions/ql-vscode/src/log-insights/join-order.ts
@@ -488,7 +488,7 @@ class JoinOrderScanner implements EvaluationLogScanner {
       // Pointwise sum the tuple counts
       const newTupleCounts = pointwiseSum(
         bucket.tupleCounts,
-        new Int32Array(run.counts),
+        new Int32Array(run.counts ?? []),
         this.problemReporter,
       );
       const resultSize = bucket.resultSize + deltaSize;
diff --git a/extensions/ql-vscode/src/log-insights/log-summary.ts b/extensions/ql-vscode/src/log-insights/log-summary.ts
index 5fa4bda58b8..1decbba93eb 100644
--- a/extensions/ql-vscode/src/log-insights/log-summary.ts
+++ b/extensions/ql-vscode/src/log-insights/log-summary.ts
@@ -1,7 +1,7 @@
 export interface PipelineRun {
   raReference: string;
-  counts: number[];
-  duplicationPercentages: number[];
+  counts?: number[];
+  duplicationPercentages?: number[];
 }
 
 interface Ra {
diff --git a/extensions/ql-vscode/src/log-insights/performance-comparison.ts b/extensions/ql-vscode/src/log-insights/performance-comparison.ts
index 46634cf8bf3..34ba5ae2559 100644
--- a/extensions/ql-vscode/src/log-insights/performance-comparison.ts
+++ b/extensions/ql-vscode/src/log-insights/performance-comparison.ts
@@ -151,7 +151,9 @@ export class PerformanceOverviewScanner implements EvaluationLogScanner {
           pipelineSummaryList,
         } = this.data;
         const pipelineSummaries = pipelineSummaryList[index];
-        for (const { counts, raReference } of event.pipelineRuns ?? []) {
+        for (const pipelineRun of event.pipelineRuns ?? []) {
+          const counts = pipelineRun.counts || [];
+          const raReference = pipelineRun.raReference;
           // Get or create the pipeline summary for this RA
           const pipelineSummary = (pipelineSummaries[raReference] ??= {
             steps: event.ra[raReference],