diff --git a/invokeai/frontend/web/src/features/nodes/util/graph/generation/buildFLUXGraph.ts b/invokeai/frontend/web/src/features/nodes/util/graph/generation/buildFLUXGraph.ts
index 88e99ae8ea..a92f10dcc3 100644
--- a/invokeai/frontend/web/src/features/nodes/util/graph/generation/buildFLUXGraph.ts
+++ b/invokeai/frontend/web/src/features/nodes/util/graph/generation/buildFLUXGraph.ts
@@ -14,7 +14,12 @@ import { addOutpaint } from 'features/nodes/util/graph/generation/addOutpaint';
 import { addTextToImage } from 'features/nodes/util/graph/generation/addTextToImage';
 import { addWatermarker } from 'features/nodes/util/graph/generation/addWatermarker';
 import { Graph } from 'features/nodes/util/graph/generation/Graph';
-import { getBoardField, getPresetModifiedPrompts, getSizes } from 'features/nodes/util/graph/graphBuilderUtils';
+import {
+  CANVAS_OUTPUT_PREFIX,
+  getBoardField,
+  getPresetModifiedPrompts,
+  getSizes,
+} from 'features/nodes/util/graph/graphBuilderUtils';
 import type { Invocation } from 'services/api/types';
 import { isNonRefinerMainModelConfig } from 'services/api/types';
 import { assert } from 'tsafe';
@@ -250,7 +255,7 @@ export const buildFLUXGraph = async (
   }
 
   g.updateNode(canvasOutput, {
-    id: getPrefixedId('canvas_output'),
+    id: getPrefixedId(CANVAS_OUTPUT_PREFIX),
     is_intermediate,
     use_cache: false,
     board,
diff --git a/invokeai/frontend/web/src/features/nodes/util/graph/generation/buildSD1Graph.ts b/invokeai/frontend/web/src/features/nodes/util/graph/generation/buildSD1Graph.ts
index f5575c11d1..b5b42a4f79 100644
--- a/invokeai/frontend/web/src/features/nodes/util/graph/generation/buildSD1Graph.ts
+++ b/invokeai/frontend/web/src/features/nodes/util/graph/generation/buildSD1Graph.ts
@@ -18,7 +18,12 @@ import { addSeamless } from 'features/nodes/util/graph/generation/addSeamless';
 import { addTextToImage } from 'features/nodes/util/graph/generation/addTextToImage';
 import { addWatermarker } from 'features/nodes/util/graph/generation/addWatermarker';
 import { Graph } from 'features/nodes/util/graph/generation/Graph';
-import { getBoardField, getPresetModifiedPrompts, getSizes } from 'features/nodes/util/graph/graphBuilderUtils';
+import {
+  CANVAS_OUTPUT_PREFIX,
+  getBoardField,
+  getPresetModifiedPrompts,
+  getSizes,
+} from 'features/nodes/util/graph/graphBuilderUtils';
 import type { Invocation } from 'services/api/types';
 import { isNonRefinerMainModelConfig } from 'services/api/types';
 import { assert } from 'tsafe';
@@ -291,7 +296,7 @@ export const buildSD1Graph = async (
   }
 
   g.updateNode(canvasOutput, {
-    id: getPrefixedId('canvas_output'),
+    id: getPrefixedId(CANVAS_OUTPUT_PREFIX),
     is_intermediate,
     use_cache: false,
     board,
diff --git a/invokeai/frontend/web/src/features/nodes/util/graph/generation/buildSDXLGraph.ts b/invokeai/frontend/web/src/features/nodes/util/graph/generation/buildSDXLGraph.ts
index 52bfbea18a..7d3eea5884 100644
--- a/invokeai/frontend/web/src/features/nodes/util/graph/generation/buildSDXLGraph.ts
+++ b/invokeai/frontend/web/src/features/nodes/util/graph/generation/buildSDXLGraph.ts
@@ -18,7 +18,12 @@ import { addSeamless } from 'features/nodes/util/graph/generation/addSeamless';
 import { addTextToImage } from 'features/nodes/util/graph/generation/addTextToImage';
 import { addWatermarker } from 'features/nodes/util/graph/generation/addWatermarker';
 import { Graph } from 'features/nodes/util/graph/generation/Graph';
-import { getBoardField, getPresetModifiedPrompts, getSizes } from 'features/nodes/util/graph/graphBuilderUtils';
+import {
+  CANVAS_OUTPUT_PREFIX,
+  getBoardField,
+  getPresetModifiedPrompts,
+  getSizes,
+} from 'features/nodes/util/graph/graphBuilderUtils';
 import type { Invocation } from 'services/api/types';
 import { isNonRefinerMainModelConfig } from 'services/api/types';
 import { assert } from 'tsafe';
@@ -294,7 +299,7 @@ export const buildSDXLGraph = async (
   }
 
   g.updateNode(canvasOutput, {
-    id: getPrefixedId('canvas_output'),
+    id: getPrefixedId(CANVAS_OUTPUT_PREFIX),
     is_intermediate,
     use_cache: false,
     board,
diff --git a/invokeai/frontend/web/src/features/nodes/util/graph/graphBuilderUtils.ts b/invokeai/frontend/web/src/features/nodes/util/graph/graphBuilderUtils.ts
index 9d134099c3..8d6fbe636d 100644
--- a/invokeai/frontend/web/src/features/nodes/util/graph/graphBuilderUtils.ts
+++ b/invokeai/frontend/web/src/features/nodes/util/graph/graphBuilderUtils.ts
@@ -129,3 +129,5 @@ export const addImageToLatents = (g: Graph, isFlux: boolean, fp32: boolean, imag
     return g.addNode({ id: 'i2l', type: 'i2l', fp32, image: image_name ? { image_name } : undefined });
   }
 };
+
+export const CANVAS_OUTPUT_PREFIX = 'canvas_output';
diff --git a/invokeai/frontend/web/src/services/events/onInvocationComplete.tsx b/invokeai/frontend/web/src/services/events/onInvocationComplete.tsx
index 47a2245f33..617528e225 100644
--- a/invokeai/frontend/web/src/services/events/onInvocationComplete.tsx
+++ b/invokeai/frontend/web/src/services/events/onInvocationComplete.tsx
@@ -6,6 +6,7 @@ import { stagingAreaImageStaged } from 'features/controlLayers/store/canvasStagi
 import { boardIdSelected, galleryViewChanged, imageSelected, offsetChanged } from 'features/gallery/store/gallerySlice';
 import { $nodeExecutionStates, upsertExecutionState } from 'features/nodes/hooks/useExecutionState';
 import { zNodeStatus } from 'features/nodes/types/invocation';
+import { CANVAS_OUTPUT_PREFIX } from 'features/nodes/util/graph/graphBuilderUtils';
 import { boardsApi } from 'services/api/endpoints/boards';
 import { getImageDTOSafe, imagesApi } from 'services/api/endpoints/images';
 import type { ImageDTO, S } from 'services/api/types';
@@ -15,7 +16,7 @@ import { $lastProgressEvent } from 'services/events/stores';
 const log = logger('events');
 
 const isCanvasOutputNode = (data: S['InvocationCompleteEvent']) => {
-  return data.invocation_source_id.split(':')[0] === 'canvas_output';
+  return data.invocation_source_id.split(':')[0] === CANVAS_OUTPUT_PREFIX;
 };
 
 const nodeTypeDenylist = ['load_image', 'image'];