diff --git a/src/xfce-taskmanager-linux.c b/src/xfce-taskmanager-linux.c
index 18cb520..6fdb4fd 100644
--- a/src/xfce-taskmanager-linux.c
+++ b/src/xfce-taskmanager-linux.c
@@ -17,6 +17,8 @@
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
+#include <unistd.h>
+
 #include "xfce-taskmanager-linux.h"
 
 struct task get_task_details(gint pid)
@@ -31,12 +33,20 @@ struct task get_task_details(gint pid)
 	struct stat status;
 	gchar filename[255];
 	gchar cmdline_filename[255];
+	static int pagesize = 0;
 
 	sprintf(filename, "/proc/%i/stat", pid);
 	sprintf(cmdline_filename, "/proc/%i/cmdline", pid);
 
 	stat(filename, &status);
-	
+
+	if (pagesize == 0)
+	{
+		pagesize = sysconf(_SC_PAGESIZE);
+		if (pagesize == 0)
+			pagesize = 4*1024;
+	}
+
 	task.pid = -1;
 	task.checked = FALSE;
 
@@ -101,6 +111,7 @@ struct task get_task_details(gint pid)
 			task.time = stime + utime;
 			task.old_time = task.time;
 			task.time_percentage = 0;
+			task.rss *= pagesize / 1024;
 			task.size = task.size / 1024;
 		}
 		task.uid = status.st_uid;