diff --git a/openflexure_microscope/api/static/src/components/tabContentComponents/imjoyContent.vue b/openflexure_microscope/api/static/src/components/tabContentComponents/imjoyContent.vue
index 4dbbe395..cac43c0d 100644
--- a/openflexure_microscope/api/static/src/components/tabContentComponents/imjoyContent.vue
+++ b/openflexure_microscope/api/static/src/components/tabContentComponents/imjoyContent.vue
@@ -503,7 +503,7 @@ export default {
               _rtype: "ndarray",
               _rdtype: "uint8",
               _rshape: [imagesAsNdarrays.length, shape[0], shape[1], shape[2]],
-              _rdata: stackData.buffer
+              _rvalue: stackData.buffer
             };
             console.log(
               `Stack is ${transferredBytes} and will have shape: ${stackNdarray._rshape}`
@@ -545,7 +545,7 @@ export default {
               _rtype: "ndarray",
               _rdtype: "uint8",
               _rshape: [imagesAsNdarrays.length, shape[0], shape[1], shape[2]],
-              _rdata: stackData
+              _rvalue: stackData
             };
             console.log(
               `Stack is ${transferredBytes} and will have shape: ${stackNdarray._rshape}`