diff --git a/Source/Core/DolphinWX/Frame.cpp b/Source/Core/DolphinWX/Frame.cpp
index 07bb10618e..57e4af278b 100644
--- a/Source/Core/DolphinWX/Frame.cpp
+++ b/Source/Core/DolphinWX/Frame.cpp
@@ -688,6 +688,64 @@ WXLRESULT CFrame::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 }
 #endif
 
+void CFrame::InhibitScreensaver()
+{
+// Inhibit the screensaver. Depending on the operating system this may also
+// disable low-power states and/or screen dimming.
+
+#if defined(HAVE_X11) && HAVE_X11
+  if (SConfig::GetInstance().bDisableScreenSaver)
+  {
+    X11Utils::InhibitScreensaver(X11Utils::XDisplayFromHandle(GetHandle()),
+                                 X11Utils::XWindowFromHandle(GetHandle()), true);
+  }
+#endif
+
+#ifdef _WIN32
+  // Prevents Windows from sleeping, turning off the display, or idling
+  EXECUTION_STATE should_screen_save =
+      SConfig::GetInstance().bDisableScreenSaver ? ES_DISPLAY_REQUIRED : 0;
+  SetThreadExecutionState(ES_CONTINUOUS | should_screen_save | ES_SYSTEM_REQUIRED);
+#endif
+
+#ifdef __APPLE__
+  if (SConfig::GetInstance().bDisableScreenSaver)
+  {
+    CFStringRef reason_for_activity = CFSTR("Emulation Running");
+    if (IOPMAssertionCreateWithName(kIOPMAssertionTypePreventUserIdleDisplaySleep,
+                                    kIOPMAssertionLevelOn, reason_for_activity,
+                                    &m_power_assertion) != kIOReturnSuccess)
+    {
+      m_power_assertion = kIOPMNullAssertionID;
+    }
+  }
+#endif
+}
+
+void CFrame::UninhibitScreensaver()
+{
+#if defined(HAVE_X11) && HAVE_X11
+  if (SConfig::GetInstance().bDisableScreenSaver)
+  {
+    X11Utils::InhibitScreensaver(X11Utils::XDisplayFromHandle(GetHandle()),
+                                 X11Utils::XWindowFromHandle(GetHandle()), false);
+  }
+#endif
+
+#ifdef _WIN32
+  // Allow windows to resume normal idling behavior
+  SetThreadExecutionState(ES_CONTINUOUS);
+#endif
+
+#ifdef __APPLE__
+  if (m_power_assertion != kIOPMNullAssertionID)
+  {
+    IOPMAssertionRelease(m_power_assertion);
+    m_power_assertion = kIOPMNullAssertionID;
+  }
+#endif
+}
+
 void CFrame::UpdateTitle(const std::string& str)
 {
   if (SConfig::GetInstance().bRenderToMain && SConfig::GetInstance().m_InterfaceStatusbar)
diff --git a/Source/Core/DolphinWX/Frame.h b/Source/Core/DolphinWX/Frame.h
index 19145d72d9..69d3dafbdb 100644
--- a/Source/Core/DolphinWX/Frame.h
+++ b/Source/Core/DolphinWX/Frame.h
@@ -23,6 +23,10 @@
 #include "UICommon/X11Utils.h"
 #endif
 
+#ifdef __APPLE__
+#include <IOKit/pwr_mgt/IOPMLib.h>
+#endif
+
 // Class declarations
 class CGameListCtrl;
 class CCodeWindow;
@@ -226,6 +230,13 @@ private:
   WXLRESULT MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 #endif
 
+// Screensaver
+#ifdef __APPLE__
+  IOPMAssertionID m_power_assertion = kIOPMNullAssertionID;
+#endif
+  void InhibitScreensaver();
+  void UninhibitScreensaver();
+
   void DoOpen(bool Boot);
   void DoPause();
   void DoToggleToolbar(bool);
diff --git a/Source/Core/DolphinWX/FrameTools.cpp b/Source/Core/DolphinWX/FrameTools.cpp
index 42f6f522a8..d3b26ab99d 100644
--- a/Source/Core/DolphinWX/FrameTools.cpp
+++ b/Source/Core/DolphinWX/FrameTools.cpp
@@ -721,18 +721,7 @@ void CFrame::StartGame(const std::string& filename)
   }
   else
   {
-#if defined(HAVE_X11) && HAVE_X11
-    if (SConfig::GetInstance().bDisableScreenSaver)
-      X11Utils::InhibitScreensaver(X11Utils::XDisplayFromHandle(GetHandle()),
-                                   X11Utils::XWindowFromHandle(GetHandle()), true);
-#endif
-
-#ifdef _WIN32
-    // Prevents Windows from sleeping, turning off the display, or idling
-    EXECUTION_STATE shouldScreenSave =
-        SConfig::GetInstance().bDisableScreenSaver ? ES_DISPLAY_REQUIRED : 0;
-    SetThreadExecutionState(ES_CONTINUOUS | shouldScreenSave | ES_SYSTEM_REQUIRED);
-#endif
+    InhibitScreensaver();
 
     // We need this specifically to support setting the focus properly when using
     // the 'render to main window' feature on Windows
@@ -904,16 +893,7 @@ void CFrame::OnStopped()
   m_confirm_stop = false;
   m_tried_graceful_shutdown = false;
 
-#if defined(HAVE_X11) && HAVE_X11
-  if (SConfig::GetInstance().bDisableScreenSaver)
-    X11Utils::InhibitScreensaver(X11Utils::XDisplayFromHandle(GetHandle()),
-                                 X11Utils::XWindowFromHandle(GetHandle()), false);
-#endif
-
-#ifdef _WIN32
-  // Allow windows to resume normal idling behavior
-  SetThreadExecutionState(ES_CONTINUOUS);
-#endif
+  UninhibitScreensaver();
 
   m_render_frame->SetTitle(StrToWxStr(scm_rev_str));