diff --git a/pyqtgraph/functions.py b/pyqtgraph/functions.py
index ef959466..6cf5f98d 100644
--- a/pyqtgraph/functions.py
+++ b/pyqtgraph/functions.py
@@ -11,6 +11,7 @@ import numpy as np
 import decimal, re
 import ctypes
 import sys, struct
+from .pgcollections import OrderedDict
 from .python2_3 import asUnicode, basestring
 from .Qt import QtGui, QtCore, QT_LIB
 from . import getConfigOption, setConfigOptions
@@ -446,11 +447,15 @@ def eq(a, b):
     if isinstance(a, dict) and isinstance(b, dict):
         if type(a) != type(b) or len(a) != len(b):
             return False
-        if sorted(a.keys()) != sorted(b.keys()):
+        if set(a.keys()) != set(b.keys()):
             return False
-        for k,v in a.items():
+        for k, v in a.items():
             if not eq(v, b[k]):
                 return False
+        if isinstance(a, OrderedDict) or sys.version_info >= (3, 7):
+            for a_item, b_item in zip(a.items(), b.items()):
+                if not eq(a_item, b_item):
+                    return False
         return True
     if isinstance(a, (list, tuple)) and isinstance(b, (list, tuple)):
         if type(a) != type(b) or len(a) != len(b):