diff --git a/Config/Config.cs b/Config/Config.cs
index d3970c6..9388582 100644
--- a/Config/Config.cs
+++ b/Config/Config.cs
@@ -127,8 +127,20 @@ namespace SystemTrayMenu
         private static bool IsDarkModeActive()
         {
             // Check: AppsUseLightTheme (REG_DWORD)
+            bool isDarkModeActive = false;
+            object registryValueAppsUseLightTheme = Registry.GetValue(
+                "HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize",
+                "AppsUseLightTheme",
+                1);
+
             // 0 = Dark mode, 1 = Light mode
-            return Registry.GetValue("HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize", "AppsUseLightTheme", 1).ToString() == "0";
+            if (registryValueAppsUseLightTheme != null && 
+                registryValueAppsUseLightTheme.ToString() == "0")
+            {
+                isDarkModeActive = true;
+            }
+
+            return isDarkModeActive;
         }
     }
 }
diff --git a/Properties/AssemblyInfo.cs b/Properties/AssemblyInfo.cs
index e4f9ed6..bae796e 100644
--- a/Properties/AssemblyInfo.cs
+++ b/Properties/AssemblyInfo.cs
@@ -39,5 +39,5 @@ using System.Runtime.InteropServices;
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.17.8")]
-[assembly: AssemblyFileVersion("1.0.17.8")]
+[assembly: AssemblyVersion("1.0.17.9")]
+[assembly: AssemblyFileVersion("1.0.17.9")]