diff --git a/shell/browser/api/electron_api_system_preferences_mac.mm b/shell/browser/api/electron_api_system_preferences_mac.mm
index 29e8aea2f948..489548f34eb2 100644
--- a/shell/browser/api/electron_api_system_preferences_mac.mm
+++ b/shell/browser/api/electron_api_system_preferences_mac.mm
@@ -311,86 +311,68 @@ void SystemPreferences::RegisterDefaults(gin_helper::Arguments* args) {
 void SystemPreferences::SetUserDefault(const std::string& name,
                                        const std::string& type,
                                        gin_helper::Arguments* args) {
-  const auto throwConversionError = [&] {
-    args->ThrowError("Unable to convert value to: " + type);
-  };
-
   NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
   NSString* key = base::SysUTF8ToNSString(name);
   if (type == "string") {
     std::string value;
-    if (!args->GetNext(&value)) {
-      throwConversionError();
+    if (args->GetNext(&value)) {
+      [defaults setObject:base::SysUTF8ToNSString(value) forKey:key];
       return;
     }
-
-    [defaults setObject:base::SysUTF8ToNSString(value) forKey:key];
   } else if (type == "boolean") {
     bool value;
-    if (!args->GetNext(&value)) {
-      throwConversionError();
+    if (args->GetNext(&value)) {
+      [defaults setBool:value forKey:key];
       return;
     }
-
-    [defaults setBool:value forKey:key];
   } else if (type == "float") {
     float value;
-    if (!args->GetNext(&value)) {
-      throwConversionError();
+    if (args->GetNext(&value)) {
+      [defaults setFloat:value forKey:key];
       return;
     }
-
-    [defaults setFloat:value forKey:key];
   } else if (type == "integer") {
     int value;
-    if (!args->GetNext(&value)) {
-      throwConversionError();
+    if (args->GetNext(&value)) {
+      [defaults setInteger:value forKey:key];
       return;
     }
-
-    [defaults setInteger:value forKey:key];
   } else if (type == "double") {
     double value;
-    if (!args->GetNext(&value)) {
-      throwConversionError();
+    if (args->GetNext(&value)) {
+      [defaults setDouble:value forKey:key];
       return;
     }
-
-    [defaults setDouble:value forKey:key];
   } else if (type == "url") {
     GURL value;
-    if (!args->GetNext(&value)) {
-      throwConversionError();
-      return;
-    }
-
-    if (NSURL* url = net::NSURLWithGURL(value)) {
-      [defaults setURL:url forKey:key];
+    if (args->GetNext(&value)) {
+      if (NSURL* url = net::NSURLWithGURL(value)) {
+        [defaults setURL:url forKey:key];
+        return;
+      }
     }
   } else if (type == "array") {
     base::ListValue value;
-    if (!args->GetNext(&value)) {
-      throwConversionError();
-      return;
-    }
-
-    if (NSArray* array = ListValueToNSArray(value)) {
-      [defaults setObject:array forKey:key];
+    if (args->GetNext(&value)) {
+      if (NSArray* array = ListValueToNSArray(value)) {
+        [defaults setObject:array forKey:key];
+        return;
+      }
     }
   } else if (type == "dictionary") {
     base::DictionaryValue value;
-    if (!args->GetNext(&value)) {
-      throwConversionError();
-      return;
-    }
-
-    if (NSDictionary* dict = DictionaryValueToNSDictionary(value)) {
-      [defaults setObject:dict forKey:key];
+    if (args->GetNext(&value)) {
+      if (NSDictionary* dict = DictionaryValueToNSDictionary(value)) {
+        [defaults setObject:dict forKey:key];
+        return;
+      }
     }
   } else {
     args->ThrowError("Invalid type: " + type);
     return;
   }
+
+  args->ThrowError("Unable to convert value to: " + type);
 }
 
 std::string SystemPreferences::GetAccentColor() {