diff --git a/src/traces/image/attributes.js b/src/traces/image/attributes.js
index a1ee867d323..4d12a10019a 100644
--- a/src/traces/image/attributes.js
+++ b/src/traces/image/attributes.js
@@ -21,7 +21,7 @@ module.exports = extendFlat({
         editType: 'calc',
         description: [
             'Specifies the data URI of the image to be visualized.',
-            'The URI consists of "data:image/[<media subtype>][;base64],<data>"'
+            'The URI consists of "data:image/[<media subtype\\\\>][;base64\\\\],<data\\\\>"'
         ].join(' ')
     },
     z: {
diff --git a/test/plot-schema.json b/test/plot-schema.json
index ff766ea613b..b8f5b4b8eda 100644
--- a/test/plot-schema.json
+++ b/test/plot-schema.json
@@ -47932,7 +47932,7 @@
      "valType": "number"
     },
     "source": {
-     "description": "Specifies the data URI of the image to be visualized. The URI consists of \"data:image/[<media subtype>][;base64],<data>\"",
+     "description": "Specifies the data URI of the image to be visualized. The URI consists of \"data:image/[<media subtype\\\\>][;base64\\\\],<data\\\\>\"",
      "editType": "calc",
      "valType": "string"
     },