diff --git a/pkgs/misc/emulators/zsnes/default.nix b/pkgs/misc/emulators/zsnes/default.nix
index 6ee57e0cddf..c3bced29200 100644
--- a/pkgs/misc/emulators/zsnes/default.nix
+++ b/pkgs/misc/emulators/zsnes/default.nix
@@ -19,25 +19,8 @@ stdenv.mkDerivation {
 
   preConfigure = ''
     cd src
-
     sed -i "/^STRIP/d" configure
-    
-    # Fix for undefined strncasecmp()
-    echo '#include <strings.h>' > tmp.cpp 
-    cat tmp.cpp tools/strutil.h > tools/strutil.h.new
-    mv tools/strutil.h.new tools/strutil.h
-    
-    # Fix for undefined system()
-    echo '#include <stdlib.h>' > tmp.cpp
-    cat tmp.cpp tools/depbuild.cpp > tools/depbuild.cpp.new
-    mv tools/depbuild.cpp.new tools/depbuild.cpp
-    
-    # Fix for lots of undefined strcmp, strncmp etc.
-    echo '#include <string.h>' > tmp.cpp 
-    cat tmp.cpp parsegen.cpp > parsegen.cpp.new
-    mv parsegen.cpp.new parsegen.cpp
   '';
-  
 
   configureFlags = "--enable-release";