diff --git a/Source/BitmapTransitionSource.cpp b/Source/BitmapTransitionSource.cpp
index 8d787942..7b366af6 100644
--- a/Source/BitmapTransitionSource.cpp
+++ b/Source/BitmapTransitionSource.cpp
@@ -27,8 +27,6 @@
 
 const float fadeTime = 1.5f;
 
-extern "C" double round(double val);
-
 class BitmapTransitionSource : public ImageSource
 {
     List<BitmapImage*> bitmapImages;
diff --git a/Source/Hacks.cpp b/Source/Hacks.cpp
deleted file mode 100644
index 69955ef2..00000000
--- a/Source/Hacks.cpp
+++ /dev/null
@@ -1,33 +0,0 @@
-/********************************************************************************
- Copyright (C) 2012 Hugh Bailey <obs.jim@gmail.com>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
-********************************************************************************/
-
-#include "Main.h"
-
-extern "C"
-{
-    double round(double val)
-    {
-        if(!_isnan(val) || !_finite(val))
-            return val;
-
-        if(val > 0.0f)
-            return floor(val+0.5);
-        else
-            return floor(val-0.5);
-    }
-}
diff --git a/Source/WindowStuff.cpp b/Source/WindowStuff.cpp
index 7432dc70..13f89526 100644
--- a/Source/WindowStuff.cpp
+++ b/Source/WindowStuff.cpp
@@ -1916,8 +1916,6 @@ void OBS::MoveItemsByPixels(int dx, int dy)
     }
 }
 
-extern "C" double round(double val);
-
 void OBS::FitItemsToScreen()
 {
     if(App->bRunning)