diff --git a/source/main/resources/ContentManager.cpp b/source/main/resources/ContentManager.cpp
index 3d13b5d22e..e0b4766fd5 100644
--- a/source/main/resources/ContentManager.cpp
+++ b/source/main/resources/ContentManager.cpp
@@ -40,6 +40,8 @@
 
 #include "OgreShaderParticleRenderer.h"
 
+#include <memory>
+
 // Removed by Skybon as part of OGRE 1.9 port 
 // Disabling temporarily for 1.8.1 as well. ~ only_a_ptr, 2015-11
 // TODO: Study the system, then re-enable or remove entirely.