diff --git a/packages/expo-file-system/ios/EXFileSystem/EXFileSystem.m b/packages/expo-file-system/ios/EXFileSystem/EXFileSystem.m
index 7059616f5e483..0ba7d9e296b5b 100644
--- a/packages/expo-file-system/ios/EXFileSystem/EXFileSystem.m
+++ b/packages/expo-file-system/ios/EXFileSystem/EXFileSystem.m
@@ -687,7 +687,7 @@ - (NSMutableDictionary *)_parseServerResponse:(NSURLResponse *)response
   NSMutableDictionary *result = [NSMutableDictionary dictionary];
   result[@"status"] = @([httpResponse statusCode]);
   result[@"headers"] = [httpResponse allHeaderFields];
-  result[@"MINEType"] = UMNullIfNil([httpResponse MIMEType]);
+  result[@"mineType"] = UMNullIfNil([httpResponse MIMEType]);
   return result;
 }