diff --git a/src/core/lib/Magic.mjs b/src/core/lib/Magic.mjs
index c4b7574a..3b1a7c80 100644
--- a/src/core/lib/Magic.mjs
+++ b/src/core/lib/Magic.mjs
@@ -5,7 +5,7 @@ import Dish from "../Dish.mjs";
 import {detectFileType} from "./FileType.mjs";
 import chiSquared from "chi-squared";
 import potentialOps from "./Test.mjs";
-import { isImage } from "./FileType.mjs";
+import { isType } from "./FileType.mjs";
 
 /**
  * A class for detecting encodings, file types and byte frequencies and
@@ -253,11 +253,8 @@ class Magic {
      * @returns {boolean}
      */
     async checkMime (data, type) {
-        switch (type) {
-            case "Image":
-                if (isImage(data))
-                    return false;
-                break;
+        if (isType(type, data)) {
+            return false;
         }
         return true;
     }
diff --git a/src/core/operations/RenderImage.mjs b/src/core/operations/RenderImage.mjs
index 106a8185..485f121d 100644
--- a/src/core/operations/RenderImage.mjs
+++ b/src/core/operations/RenderImage.mjs
@@ -47,7 +47,7 @@ class RenderImage extends Operation {
         ],
         null,
         {
-            type: "Image",
+            type: "image"
         }
         );
     }