diff --git a/apps/openmw/mwstate/charactermanager.cpp b/apps/openmw/mwstate/charactermanager.cpp
index 91d728ae0..70e9f0925 100644
--- a/apps/openmw/mwstate/charactermanager.cpp
+++ b/apps/openmw/mwstate/charactermanager.cpp
@@ -3,6 +3,7 @@
 
 #include <sstream>
 #include <stdexcept>
+#include <cctype> // std::isalnum
 
 #include <boost/filesystem.hpp>
 
diff --git a/extern/oics/ICSPrerequisites.h b/extern/oics/ICSPrerequisites.h
index 52daea3f4..6e6cd814b 100644
--- a/extern/oics/ICSPrerequisites.h
+++ b/extern/oics/ICSPrerequisites.h
@@ -36,6 +36,7 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <map>
 #include <list>
 #include <limits>
+#include <algorithm> /* std::min and std::max for MSVC 2013 */
 
 #include "tinyxml.h"
 
@@ -90,7 +91,7 @@ namespace ICS
 
 	// from http://www.cplusplus.com/forum/articles/9645/
 	template <typename T>
-	T FromString ( const std::string &Text )//Text not by const reference so that the function can be used with a 
+	T FromString ( const std::string &Text )//Text not by const reference so that the function can be used with a
 	{											//character array as argument
 		std::stringstream ss(Text);
 		T result;
diff --git a/extern/sdl4ogre/sdlinputwrapper.hpp b/extern/sdl4ogre/sdlinputwrapper.hpp
index f08e3eff6..275701814 100644
--- a/extern/sdl4ogre/sdlinputwrapper.hpp
+++ b/extern/sdl4ogre/sdlinputwrapper.hpp
@@ -1,6 +1,8 @@
 #ifndef SDL4OGRE_SDLINPUTWRAPPER_H
 #define SDL4OGRE_SDLINPUTWRAPPER_H
 
+#define NOMINMAX
+
 #include <SDL_events.h>
 
 #include <OgreRenderWindow.h>