From 1d1259e9861c367e618ce79ab015f596909a7a35 Mon Sep 17 00:00:00 2001
From: Jon Thielen <github@jont.cc>
Date: Thu, 9 Jul 2020 14:24:58 -0500
Subject: [PATCH] Fix _check_argument_units for pint __eq__ returning duck
 array

---
 src/metpy/units.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/metpy/units.py b/src/metpy/units.py
index dde51b5f176..74743d10a67 100644
--- a/src/metpy/units.py
+++ b/src/metpy/units.py
@@ -182,7 +182,7 @@ def _check_argument_units(args, defaults, dimensionality):
 
         if arg in defaults:
             check = val == defaults[arg]
-            if check:
+            if np.all(check):
                 continue
 
         # See if the value passed in is appropriate