diff --git a/README.md b/README.md
index 29a4a98..e74649f 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,7 @@ To install, run `sudo make install` after building. You can set the daemon to st
 |  Device   | Compatible? |
 |:---------:|:-----------:|
 | MX Master |     Yes     |
+|MX Vertical|     Yes     |
 |   T400    |     Yes     |
 |   K400r   |  Untested   |
 |   K350    |  Untested   |
diff --git a/src/logid/Configuration.h b/src/logid/Configuration.h
index 463b51f..07d5765 100644
--- a/src/logid/Configuration.h
+++ b/src/logid/Configuration.h
@@ -20,7 +20,7 @@ namespace logid
         DeviceConfig(DeviceConfig* dc, Device* dev);
         DeviceConfig(const libconfig::Setting& root);
         const int* dpi = nullptr;
-        HIDPP20::ISmartShift::SmartshiftStatus* smartshift;
+        HIDPP20::ISmartShift::SmartshiftStatus* smartshift = nullptr;
         const uint8_t* hiresscroll = nullptr;
         std::map<uint16_t, ButtonAction*> actions;
         const bool baseConfig = true;