diff --git a/cockatrice/src/interface/theme_manager.cpp b/cockatrice/src/interface/theme_manager.cpp
index 4ba35a00e..7dc757062 100644
--- a/cockatrice/src/interface/theme_manager.cpp
+++ b/cockatrice/src/interface/theme_manager.cpp
@@ -399,6 +399,7 @@ static QString roleBgName(ThemeManager::Role role)
 
         default:
             Q_ASSERT(false);
+            return {};
     }
 }