diff --git a/src/core/pitime.cpp b/src/core/pitime.cpp
index 8088ed22..fe985565 100755
--- a/src/core/pitime.cpp
+++ b/src/core/pitime.cpp
@@ -30,7 +30,13 @@
 //#  include <crt_externs.h>
    extern clock_serv_t __pi_mac_clock;
 #endif
-
+#include <ctime>
+#ifdef QNX
+#  include <time.h>
+#endif
+#ifdef CC_GCC
+#  include <unistd.h>
+#endif
 
 /*! \class PISystemTime
  * \brief System time
@@ -502,3 +508,10 @@ PICout operator <<(PICout s, const PIDateTime & v) {
 	s.restoreControl();
 	return s;
 }
+
+
+#ifdef WINDOWS
+void msleep(int msecs) {Sleep(msecs);}
+#else
+void msleep(int msecs) {usleep(msecs * 1000);}
+#endif
diff --git a/src/core/pitime.h b/src/core/pitime.h
index e4023d9b..57326911 100755
--- a/src/core/pitime.h
+++ b/src/core/pitime.h
@@ -23,23 +23,11 @@
 #ifndef PITIME_H
 #define PITIME_H
 
-#include <ctime>
 #include "pistring.h"
-#ifdef QNX
-#  include <time.h>
-#endif
 
 
-#ifdef DOXYGEN
 //! \brief Sleep for "msecs" milliseconds
 void msleep(int msecs);
-#else
-#  ifdef WINDOWS
-inline void msleep(int msecs) {Sleep(msecs);}
-#  else
-inline void msleep(int msecs) {usleep(msecs * 1000);}
-#  endif
-#endif
 
 /*! \brief Precise sleep for "usecs" microseconds
  * \details This function consider \c "usleep" offset