diff --git a/common/build/Utilities/utilities_vs2012.vcxproj b/common/build/Utilities/utilities_vs2012.vcxproj
index cf57db1452..d1cdcc753e 100644
--- a/common/build/Utilities/utilities_vs2012.vcxproj
+++ b/common/build/Utilities/utilities_vs2012.vcxproj
@@ -166,6 +166,7 @@
     <ClInclude Include="..\..\include\Utilities\HashMap.h" />
     <ClInclude Include="..\..\include\intrin_x86.h" />
     <ClInclude Include="..\..\include\Utilities\lnx_memzero.h" />
+    <ClInclude Include="..\..\include\Utilities\Math.h" />
     <ClInclude Include="..\..\include\Utilities\MemcpyFast.h" />
     <ClInclude Include="..\..\include\Utilities\Path.h" />
     <ClInclude Include="..\..\src\Utilities\PrecompiledHeader.h" />
diff --git a/common/build/Utilities/utilities_vs2012.vcxproj.filters b/common/build/Utilities/utilities_vs2012.vcxproj.filters
index d0e937a35c..fa10f1eba0 100644
--- a/common/build/Utilities/utilities_vs2012.vcxproj.filters
+++ b/common/build/Utilities/utilities_vs2012.vcxproj.filters
@@ -168,6 +168,9 @@
     <ClInclude Include="..\..\include\Utilities\lnx_memzero.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\Utilities\Math.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\include\Utilities\MemcpyFast.h">
       <Filter>Header Files</Filter>
     </ClInclude>
diff --git a/common/build/Utilities/utilities_vs2013.vcxproj b/common/build/Utilities/utilities_vs2013.vcxproj
index f261d769e0..141fc4d745 100644
--- a/common/build/Utilities/utilities_vs2013.vcxproj
+++ b/common/build/Utilities/utilities_vs2013.vcxproj
@@ -166,6 +166,7 @@
     <ClInclude Include="..\..\include\Utilities\HashMap.h" />
     <ClInclude Include="..\..\include\intrin_x86.h" />
     <ClInclude Include="..\..\include\Utilities\lnx_memzero.h" />
+    <ClInclude Include="..\..\include\Utilities\Math.h" />
     <ClInclude Include="..\..\include\Utilities\MemcpyFast.h" />
     <ClInclude Include="..\..\include\Utilities\Path.h" />
     <ClInclude Include="..\..\src\Utilities\PrecompiledHeader.h" />
diff --git a/common/build/Utilities/utilities_vs2013.vcxproj.filters b/common/build/Utilities/utilities_vs2013.vcxproj.filters
index 961b6a7d18..9dc015334a 100644
--- a/common/build/Utilities/utilities_vs2013.vcxproj.filters
+++ b/common/build/Utilities/utilities_vs2013.vcxproj.filters
@@ -168,6 +168,9 @@
     <ClInclude Include="..\..\include\Utilities\lnx_memzero.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\Utilities\Math.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\include\Utilities\MemcpyFast.h">
       <Filter>Header Files</Filter>
     </ClInclude>
diff --git a/common/include/Utilities/Math.h b/common/include/Utilities/Math.h
index e444f687fb..f9ab252922 100644
--- a/common/include/Utilities/Math.h
+++ b/common/include/Utilities/Math.h
@@ -21,14 +21,14 @@
 
 // On GCC >= 4.7, this is equivalent to __builtin_clrsb(n);
 inline u32 count_leading_sign_bits(s32 n) {
-	// If BSR is used directly, it would have an undefined value for 0.
-	if (n == 0)
-		return 32;
-
 	// If the sign bit is 1, we invert the bits to 0 for count-leading-zero.
 	if (n < 0)
 		n = ~n;
 
+	// If BSR is used directly, it would have an undefined value for 0.
+	if (n == 0)
+		return 32;
+
 	// Perform our count leading zero.
 #ifdef _MSC_VER
 	unsigned long ret;