diff --git a/UI/TiltEventProcessor.cpp b/UI/TiltEventProcessor.cpp
index 54613a84f1..4960c06bdd 100644
--- a/UI/TiltEventProcessor.cpp
+++ b/UI/TiltEventProcessor.cpp
@@ -1,3 +1,5 @@
+#define _USE_MATH_DEFINES
+#include <cmath>
 #include "TiltEventProcessor.h"
 #include "Core/HLE/sceCtrl.h"
 #include "math.h"
diff --git a/UI/UI.vcxproj b/UI/UI.vcxproj
index 1333c3665a..4497d86490 100644
--- a/UI/UI.vcxproj
+++ b/UI/UI.vcxproj
@@ -33,6 +33,7 @@
     <ClCompile Include="OnScreenDisplay.cpp" />
     <ClCompile Include="Store.cpp" />
     <ClCompile Include="TiltAnalogSettingsScreen.cpp" />
+    <ClCompile Include="TiltEventProcessor.cpp" />
     <ClCompile Include="TouchControlLayoutScreen.cpp" />
     <ClCompile Include="TouchControlVisibilityScreen.cpp" />
     <ClCompile Include="InstallZipScreen.cpp" />
@@ -53,6 +54,7 @@
     <ClInclude Include="OnScreenDisplay.h" />
     <ClInclude Include="Store.h" />
     <ClInclude Include="TiltAnalogSettingsScreen.h" />
+    <ClInclude Include="TiltEventProcessor.h" />
     <ClInclude Include="TouchControlLayoutScreen.h" />
     <ClInclude Include="TouchControlVisibilityScreen.h" />
     <ClInclude Include="InstallZipScreen.h" />
diff --git a/UI/UI.vcxproj.filters b/UI/UI.vcxproj.filters
index 818693e77a..0c525843e3 100644
--- a/UI/UI.vcxproj.filters
+++ b/UI/UI.vcxproj.filters
@@ -40,6 +40,9 @@
     <ClCompile Include="TiltAnalogSettingsScreen.cpp">
       <Filter>Screens</Filter>
     </ClCompile>
+    <ClCompile Include="TiltEventProcessor.cpp">
+      <Filter>Screens</Filter>
+    </ClCompile>
     <ClCompile Include="InstallZipScreen.cpp">
       <Filter>Screens</Filter>
     </ClCompile>
@@ -84,6 +87,9 @@
     <ClInclude Include="TiltAnalogSettingsScreen.h">
       <Filter>Screens</Filter>
     </ClInclude>
+    <ClInclude Include="TiltEventProcessor.h">
+      <Filter>Screens</Filter>
+    </ClInclude>
     <ClInclude Include="InstallZipScreen.h">
       <Filter>Screens</Filter>
     </ClInclude>