From 018163a01025c06df6f24975c8cc0be5d4ccf86a Mon Sep 17 00:00:00 2001
From: Martin Krulis <krulis@ksi.mff.cuni.cz>
Date: Tue, 27 Feb 2018 12:42:28 +0100
Subject: [PATCH] Fixing bug in hw group warning checker.

---
 src/pages/EditExerciseLimits/EditExerciseLimits.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/pages/EditExerciseLimits/EditExerciseLimits.js b/src/pages/EditExerciseLimits/EditExerciseLimits.js
index fa482e7ed..68e69b89b 100644
--- a/src/pages/EditExerciseLimits/EditExerciseLimits.js
+++ b/src/pages/EditExerciseLimits/EditExerciseLimits.js
@@ -99,7 +99,11 @@ class EditExerciseLimits extends Component {
         );
 
       return targetHwGroupId => {
-        if (!targetHwGroupId || targetHwGroupId === currentHwGroupId) {
+        if (
+          !targetHwGroupId ||
+          !currentHwGroupId ||
+          targetHwGroupId === currentHwGroupId
+        ) {
           return false;
         }
         const constraints = getLimitsConstraints(