diff --git a/apps/ktcachecheck/cachecheck.cpp b/apps/ktcachecheck/cachecheck.cpp
index b8f7b3e..a4b864b 100644
--- a/apps/ktcachecheck/cachecheck.cpp
+++ b/apps/ktcachecheck/cachecheck.cpp
@@ -17,6 +17,7 @@
  *   Free Software Foundation, Inc.,                                       *
  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.             *
  ***************************************************************************/
+#include <stdlib.h>
 #include <iostream>
 #include <util/log.h>
 #include <util/error.h>
diff --git a/libktorrent/torrent/advancedchokealgorithm.cpp b/libktorrent/torrent/advancedchokealgorithm.cpp
index 291eef2..7ca0578 100644
--- a/libktorrent/torrent/advancedchokealgorithm.cpp
+++ b/libktorrent/torrent/advancedchokealgorithm.cpp
@@ -17,6 +17,7 @@
  *   Free Software Foundation, Inc.,                                       *
  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.             *
  ***************************************************************************/
+#include <stdlib.h>
 #include <util/functions.h>
 #include <interfaces/torrentinterface.h>
 #include "chunkmanager.h"
diff --git a/libktorrent/util/bitset.cpp b/libktorrent/util/bitset.cpp
index c41a209..31d3215 100644
--- a/libktorrent/util/bitset.cpp
+++ b/libktorrent/util/bitset.cpp
@@ -18,6 +18,7 @@
  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.             *
  ***************************************************************************/
 #include <algorithm>
+#include <string.h>
 #include "bitset.h"
 
 namespace bt
diff --git a/libktorrent/util/log.cpp b/libktorrent/util/log.cpp
index 14bbaeb..9c75408 100644
--- a/libktorrent/util/log.cpp
+++ b/libktorrent/util/log.cpp
@@ -29,6 +29,7 @@
 #include <interfaces/logmonitorinterface.h>
 #include <qmutex.h> 
 #include <util/fileops.h>
+#include <stdlib.h>
 #include "log.h"
 #include "error.h"