diff --git a/kkbswitch/kbconfig.cpp b/kkbswitch/kbconfig.cpp
index 02594af..0113d1d 100644
--- a/kkbswitch/kbconfig.cpp
+++ b/kkbswitch/kbconfig.cpp
@@ -15,6 +15,8 @@
  *                                                                         *
  ***************************************************************************/
 
+#include <unistd.h>
+
 #include <config.h> 
 #include <tdeversion.h>
 #include <tdelocale.h>