diff --git a/contrib/mpeg_encode/headers/general.h b/contrib/mpeg_encode/headers/general.h
index a4782c897bc3540a263202bf12914178cdde20dc..f78dfd2af454feebe6b7b1bb4f7eff486335c3ea 100644
--- a/contrib/mpeg_encode/headers/general.h
+++ b/contrib/mpeg_encode/headers/general.h
@@ -149,8 +149,8 @@ typedef int int32;
 #define max(a,b) ((a) > (b) ? (a) : (b))
 #undef min
 #define min(a,b) ((a) < (b) ? (a) : (b))
-#undef abs
-#define abs(a) ((a) >= 0 ? (a) : -(a))
+//#undef abs
+//#define abs(a) ((a) >= 0 ? (a) : -(a))
 
 
 #endif
diff --git a/contrib/mpeg_encode/pframe.cpp b/contrib/mpeg_encode/pframe.cpp
index bd51ddc8bbd9db89eff591413e0c3139a1dd6108..37ccb98cfb21100226541ccce4d6b03a7ebdcc7c 100644
--- a/contrib/mpeg_encode/pframe.cpp
+++ b/contrib/mpeg_encode/pframe.cpp
@@ -126,7 +126,7 @@
  *==============*/
 
 #include <assert.h>
-#include <sys/param.h>
+//#include <sys/param.h>
 #include "all.h"
 #include "mtypes.h"
 #include "bitio.h"
diff --git a/contrib/mpeg_encode/readframe.cpp b/contrib/mpeg_encode/readframe.cpp
index de71b9967ffd9214510141314346ae4e7d20ceb5..3eabffadad296072c26d660a6ecdb2ef056a92a5 100644
--- a/contrib/mpeg_encode/readframe.cpp
+++ b/contrib/mpeg_encode/readframe.cpp
@@ -124,7 +124,7 @@
 #include <errno.h>
 #include <ctype.h>
 #include <string.h>
-#include <unistd.h>
+//#include <unistd.h>
 #include "mtypes.h"
 #include "frames.h"
 #include "prototypes.h"