diff --git a/Source/Core/InputCommon/InputConfig.cpp b/Source/Core/InputCommon/InputConfig.cpp
index 72b28b6d16..07a9b62daf 100644
--- a/Source/Core/InputCommon/InputConfig.cpp
+++ b/Source/Core/InputCommon/InputConfig.cpp
@@ -186,9 +186,9 @@ bool InputConfig::ControllersNeedToBeCreated() const
   return m_controllers.empty();
 }
 
-std::size_t InputConfig::GetControllerCount() const
+int InputConfig::GetControllerCount() const
 {
-  return m_controllers.size();
+  return static_cast<int>(m_controllers.size());
 }
 
 void InputConfig::RegisterHotplugCallback()
diff --git a/Source/Core/InputCommon/InputConfig.h b/Source/Core/InputCommon/InputConfig.h
index 29ec661f67..0eeeedaed8 100644
--- a/Source/Core/InputCommon/InputConfig.h
+++ b/Source/Core/InputCommon/InputConfig.h
@@ -41,7 +41,7 @@ public:
 
   std::string GetGUIName() const { return m_gui_name; }
   std::string GetProfileName() const { return m_profile_name; }
-  std::size_t GetControllerCount() const;
+  int GetControllerCount() const;
 
   // These should be used after creating all controllers and before clearing them, respectively.
   void RegisterHotplugCallback();