diff --git a/Flow.Launcher.Plugin/SharedModels/ThemeData.cs b/Flow.Launcher.Plugin/SharedModels/ThemeData.cs
index 6a5e54f55..322985f3a 100644
--- a/Flow.Launcher.Plugin/SharedModels/ThemeData.cs
+++ b/Flow.Launcher.Plugin/SharedModels/ThemeData.cs
@@ -41,12 +41,16 @@ public class ThemeData
     /// <inheritdoc />
     public static bool operator ==(ThemeData left, ThemeData right)
     {
+        if (left is null && right is null)
+            return true;
         return left.Equals(right);
     }
 
     /// <inheritdoc />
     public static bool operator !=(ThemeData left, ThemeData right)
     {
+        if (left is null && right is null)
+            return false;
         return !(left == right);
     }