diff --git a/platform/viewer/src/setupTools.js b/platform/viewer/src/setupTools.js
index 71b6ad5e2..77b72fd49 100644
--- a/platform/viewer/src/setupTools.js
+++ b/platform/viewer/src/setupTools.js
@@ -142,8 +142,8 @@ function getResetLabellingAndContextMenu(store) {
 export default function setupTools(store) {
   const toolLabellingFlowCallback = getToolLabellingFlowCallback(store);
   const availableTools = [
-    { name: 'Pan', mouseButtonMasks: [4] },
-    { name: 'Zoom', mouseButtonMasks: [2] },
+    { name: 'Pan', mouseButtonMasks: [1, 4] },
+    { name: 'Zoom', mouseButtonMasks: [1, 2] },
     { name: 'Wwwc', mouseButtonMasks: [1] },
     { name: 'Magnify' },
     { name: 'WwwcRegion' },