diff --git a/src/tools/ntqdatetime.h b/src/tools/ntqdatetime.h
index 4c5a3b4f..213d42b2 100644
--- a/src/tools/ntqdatetime.h
+++ b/src/tools/ntqdatetime.h
@@ -196,11 +196,11 @@ public:
 
     TQDate  date()	const		{ return d; }
     TQTime  time()	const		{ return t; }
-    uint   toTime_t()	const;
+    time_t  toTime_t()	const;
     void   setDate( const TQDate &date ) { d = date; }
     void   setTime( const TQTime &time ) { t = time; }
-    void   setTime_t( uint secsSince1Jan1970UTC );
-    void   setTime_t( uint secsSince1Jan1970UTC, TQt::TimeSpec );
+    void   setTime_t( time_t secsSince1Jan1970UTC );
+    void   setTime_t( time_t secsSince1Jan1970UTC, TQt::TimeSpec );
 #ifndef QT_NO_DATESTRING
 #ifndef QT_NO_SPRINTF
     TQString toString( TQt::DateFormat f = TQt::TextDate )	const;