diff --git a/Source/Core/DolphinWX/Frame.h b/Source/Core/DolphinWX/Frame.h
index e5453efe4a..e7a821bfe8 100644
--- a/Source/Core/DolphinWX/Frame.h
+++ b/Source/Core/DolphinWX/Frame.h
@@ -23,6 +23,10 @@
 #include "UICommon/X11Utils.h"
 #endif
 
+#ifdef __APPLE__
+#import <IOKit/pwr_mgt/IOPMLib.h>
+#endif
+
 // Class declarations
 class CGameListCtrl;
 class CCodeWindow;
@@ -160,6 +164,10 @@ private:
     ADD_PANE_CENTER
   };
 
+#ifdef __APPLE__
+  IOPMAssertionID m_power_assertion = kIOPMNullAssertionID;
+#endif
+
   wxTimer m_poll_hotkey_timer;
   wxTimer m_handle_signal_timer;
 
diff --git a/Source/Core/DolphinWX/FrameTools.cpp b/Source/Core/DolphinWX/FrameTools.cpp
index 608141e94e..6ce69b42c8 100644
--- a/Source/Core/DolphinWX/FrameTools.cpp
+++ b/Source/Core/DolphinWX/FrameTools.cpp
@@ -84,6 +84,10 @@
 #include "VideoCommon/VideoBackendBase.h"
 #include "VideoCommon/VideoConfig.h"
 
+#ifdef __APPLE__
+#import <IOKit/pwr_mgt/IOPMLib.h>
+#endif
+
 class InputConfig;
 class wxFrame;
 
@@ -724,6 +728,14 @@ void CFrame::StartGame(const std::string& filename)
         SConfig::GetInstance().bDisableScreenSaver ? ES_DISPLAY_REQUIRED : 0;
     SetThreadExecutionState(ES_CONTINUOUS | shouldScreenSave | ES_SYSTEM_REQUIRED);
 #endif
+#ifdef __APPLE__
+    CFStringRef reason_for_activity = CFSTR("Emulation Running");
+    if (IOPMAssertionCreateWithName(kIOPMAssertionTypeNoDisplaySleep, kIOPMAssertionLevelOn,
+                                    reason_for_activity, &m_power_assertion) != kIOReturnSuccess)
+    {
+      m_power_assertion = kIOPMNullAssertionID;
+    }
+#endif
 
     // We need this specifically to support setting the focus properly when using
     // the 'render to main window' feature on Windows
@@ -898,6 +910,13 @@ void CFrame::OnStopped()
   // 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
 
   m_RenderFrame->SetTitle(StrToWxStr(scm_rev_str));