diff --git a/.eslintrc.json b/.eslintrc.json
index 6de0c06..1d238a9 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -8,6 +8,7 @@
     },
     {
       "files": ["index.js"],
+      "globals": {"Deno": false},
       "rules": {
         "multiline-comment-style": ["off"]
       }
diff --git a/index.js b/index.js
index a6752ec..1b060b0 100644
--- a/index.js
+++ b/index.js
@@ -79,6 +79,12 @@
     if (typeof custom === 'symbol') {
       prototype[custom] = Descending$prototype$show;
     }
+    /* istanbul ignore if */
+    if (typeof Deno !== 'undefined') {
+      if (Deno != null && typeof Deno.customInspect === 'symbol') {
+        prototype[Deno.customInspect] = Descending$prototype$show;
+      }
+    }
   }
 
   //. ```javascript