diff --git a/MVMCoreUI/TopAlert/MVMCoreUITopAlertView+Extension.swift b/MVMCoreUI/TopAlert/MVMCoreUITopAlertView+Extension.swift
index a0b128b2..f179fb11 100644
--- a/MVMCoreUI/TopAlert/MVMCoreUITopAlertView+Extension.swift
+++ b/MVMCoreUI/TopAlert/MVMCoreUITopAlertView+Extension.swift
@@ -36,7 +36,7 @@ public extension MVMCoreUITopAlertView {
         
         // Show any new top alert.
         guard let responseJSON = loadObject.responseJSON,
-              let json = responseJSON.optionalDictionaryForKey("TopNotification"),
+              let json = responseJSON.optionalDictionaryForKey(KeyTopAlert),
               let model = decodeTopNotification(with: json, delegateObject: getDelegateObject()) else { return }
         showTopAlert(with: model)
     }
diff --git a/MVMCoreUI/Utility/MVMCoreUIConstants.h b/MVMCoreUI/Utility/MVMCoreUIConstants.h
index ddd93d44..b96d50ed 100644
--- a/MVMCoreUI/Utility/MVMCoreUIConstants.h
+++ b/MVMCoreUI/Utility/MVMCoreUIConstants.h
@@ -49,6 +49,9 @@ extern NSString * const KeyActionTypeAlert;
 extern NSString * const KeyActionTypeTopAlert;
 extern NSString * const KeyActionTypeCollapseNotification;
 
+/// Key for molecular top notification architecture.
+extern NSString * const KeyTopAlert;
+
 #pragma mark - Values
 
 extern NSString * const StringY;
diff --git a/MVMCoreUI/Utility/MVMCoreUIConstants.m b/MVMCoreUI/Utility/MVMCoreUIConstants.m
index a2b352fb..092851cd 100644
--- a/MVMCoreUI/Utility/MVMCoreUIConstants.m
+++ b/MVMCoreUI/Utility/MVMCoreUIConstants.m
@@ -47,6 +47,8 @@ NSString * const KeyActionTypeAlert = @"alert";
 NSString * const KeyActionTypeTopAlert = @"topAlert";
 NSString * const KeyActionTypeCollapseNotification = @"collapseNotification";
 
+NSString * const KeyTopAlert = @"TopNotification";
+
 #pragma mark - Values
 
 NSString * const StringY = @"Y";