diff --git a/data-index/kogito-addons-quarkus-data-index-persistence/kogito-addons-quarkus-data-index-persistence-common/runtime/src/main/java/org/kie/kogito/index/addon/api/KogitoAddonRuntimeClientImpl.java b/data-index/kogito-addons-quarkus-data-index-persistence/kogito-addons-quarkus-data-index-persistence-common/runtime/src/main/java/org/kie/kogito/index/addon/api/KogitoAddonRuntimeClientImpl.java
index 697dcfd1e0..1f9b64d91d 100644
--- a/data-index/kogito-addons-quarkus-data-index-persistence/kogito-addons-quarkus-data-index-persistence-common/runtime/src/main/java/org/kie/kogito/index/addon/api/KogitoAddonRuntimeClientImpl.java
+++ b/data-index/kogito-addons-quarkus-data-index-persistence/kogito-addons-quarkus-data-index-persistence-common/runtime/src/main/java/org/kie/kogito/index/addon/api/KogitoAddonRuntimeClientImpl.java
@@ -130,7 +130,8 @@ public CompletableFuture<String> getProcessInstanceDiagram(String serviceURL, Pr
         if (processSvgService == null) {
             return CompletableFuture.completedFuture(null);
         } else {
-            return CompletableFuture.supplyAsync(() -> processSvgService.getProcessInstanceSvg(processInstance.getProcessId(), processInstance.getId(), null).orElse(null), managedExecutor);
+            return CompletableFuture.supplyAsync(() -> processSvgService.getProcessInstanceSvg(processInstance.getProcessId(), processInstance.getId(), this.getAuthHeader()).orElse(null),
+                    managedExecutor);
         }
     }