diff --git a/source/coreml.js b/source/coreml.js
index 04db5a62be..711318c4b3 100644
--- a/source/coreml.js
+++ b/source/coreml.js
@@ -11,22 +11,13 @@ coreml.ModelFactory = class {
         const extension = identifier.split('.').pop().toLowerCase();
         const tags = context.tags('pb');
         if (tags.get(1) === 0 && tags.get(2) === 2) {
-            if (extension === 'pb') {
-                const tags = context.tags('pb+');
-                const keys = Object.keys(tags).map((key) => parseInt(key, 10));
-                const match = (key) =>
-                    (key >= 200 && key < 220) ||
-                    (key >= 300 && key < 320) ||
-                    (key >= 400 && key < 420) ||
-                    (key >= 500 && key < 520) ||
-                    (key >= 550 && key < 560) ||
-                    (key >= 600 && key < 620) ||
-                    (key === 900) ||
-                    (key >= 2000 && key < 2010) ||
-                    (key === 3000);
-                if (!keys.some((key) => match(key))) {
-                    return;
-                }
+            const match = (key) =>
+                (key >= 200 && key < 220) || (key >= 300 && key < 320) || (key >= 400 && key < 420) ||
+                (key >= 500 && key < 520) || (key >= 550 && key < 560) || (key >= 600 && key < 620) ||
+                (key === 900) ||
+                (key >= 2000 && key < 2010) || (key === 3000);
+            if (extension === 'pb' && Array.from(tags.keys()).every((key) => !match(key))) {
+                return;
             }
             context.type = 'coreml.pb';
             return;