diff --git a/Source/Core/Common/CMakeLists.txt b/Source/Core/Common/CMakeLists.txt
index 77f9c87a1a..6d9636363d 100644
--- a/Source/Core/Common/CMakeLists.txt
+++ b/Source/Core/Common/CMakeLists.txt
@@ -80,7 +80,6 @@ add_library(common
   Logging/Log.h
   Logging/LogManager.cpp
   Logging/LogManager.h
-  MathUtil.cpp
   MathUtil.h
   Matrix.cpp
   Matrix.h
diff --git a/Source/Core/Common/MathUtil.cpp b/Source/Core/Common/MathUtil.cpp
deleted file mode 100644
index 23034aeb14..0000000000
--- a/Source/Core/Common/MathUtil.cpp
+++ /dev/null
@@ -1,12 +0,0 @@
-// Copyright 2008 Dolphin Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#include "Common/MathUtil.h"
-
-#include <numeric>
-
-// Calculate sum of a float list
-float MathFloatVectorSum(const std::vector<float>& Vec)
-{
-  return std::accumulate(Vec.begin(), Vec.end(), 0.0f);
-}
diff --git a/Source/Core/Common/MathUtil.h b/Source/Core/Common/MathUtil.h
index d99d02d28f..8656c4313a 100644
--- a/Source/Core/Common/MathUtil.h
+++ b/Source/Core/Common/MathUtil.h
@@ -8,7 +8,6 @@
 #include <cmath>
 #include <limits>
 #include <type_traits>
-#include <vector>
 
 #include "Common/CommonTypes.h"
 
@@ -188,8 +187,6 @@ private:
 
 }  // namespace MathUtil
 
-float MathFloatVectorSum(const std::vector<float>&);
-
 // Rounds down. 0 -> undefined
 constexpr int IntLog2(u64 val)
 {
diff --git a/Source/Core/DolphinLib.props b/Source/Core/DolphinLib.props
index 0a23ac5c8c..8a463f5a5e 100644
--- a/Source/Core/DolphinLib.props
+++ b/Source/Core/DolphinLib.props
@@ -773,7 +773,6 @@
     <ClCompile Include="Common\LdrWatcher.cpp" />
     <ClCompile Include="Common\Logging\ConsoleListenerWin.cpp" />
     <ClCompile Include="Common\Logging\LogManager.cpp" />
-    <ClCompile Include="Common\MathUtil.cpp" />
     <ClCompile Include="Common\Matrix.cpp" />
     <ClCompile Include="Common\MemArenaWin.cpp" />
     <ClCompile Include="Common\MemoryUtil.cpp" />