diff --git a/build/conformance.textproto b/build/conformance.textproto
index cab5f4d826..510fc22ca6 100644
--- a/build/conformance.textproto
+++ b/build/conformance.textproto
@@ -393,3 +393,11 @@ requirement: {
   error_message:
     "Using \"Array.flat\" is not allowed because is not supported on Tizen 3."
 }
+
+requirement: {
+  type: BANNED_PROPERTY_CALL
+  value: "Object.prototype.fromEntries"
+  error_message:
+    "Using \"Object.fromEntries\" is not allowed because is not supported on "
+    "Tizen 3."
+}
diff --git a/lib/util/config_utils.js b/lib/util/config_utils.js
index bdb1eaa594..f7694fc1a6 100644
--- a/lib/util/config_utils.js
+++ b/lib/util/config_utils.js
@@ -169,23 +169,23 @@ shaka.util.ConfigUtils = class {
     };
 
     const changes = (object, base) => {
-      return Object.fromEntries(
-          Object.entries(object).reduce((acc, [key, value]) => {
-            // eslint-disable-next-line no-prototype-builtins
-            if (!base.hasOwnProperty(key)) {
-              acc.push([key, value]);
-            } else if (isObject(value) && isObject(base[key])) {
-              const diff = changes(value, base[key]);
-              if (Object.keys(diff).length > 0 || !isObject(diff)) {
-                acc.push([key, diff]);
-              }
-            } else if (isArrayEmpty(value) && isArrayEmpty(base[key])) {
-              // Do nothing if both are empty arrays
-            } else if (value !== base[key]) {
-              acc.push([key, value]);
-            }
-            return acc;
-          }, []));
+      return Object.keys(object).reduce((acc, key) => {
+        const value = object[key];
+        // eslint-disable-next-line no-prototype-builtins
+        if (!base.hasOwnProperty(key)) {
+          acc[key] = value;
+        } else if (isObject(value) && isObject(base[key])) {
+          const diff = changes(value, base[key]);
+          if (Object.keys(diff).length > 0 || !isObject(diff)) {
+            acc[key] = diff;
+          }
+        } else if (isArrayEmpty(value) && isArrayEmpty(base[key])) {
+          // Do nothing if both are empty arrays
+        } else if (value !== base[key]) {
+          acc[key] = value;
+        }
+        return acc;
+      }, {});
     };
 
     const diff = changes(object, base);