diff --git a/src/xfce-taskmanager-linux.c b/src/xfce-taskmanager-linux.c
index 18cb520..9a21c3c 100644
--- a/src/xfce-taskmanager-linux.c
+++ b/src/xfce-taskmanager-linux.c
@@ -31,12 +31,20 @@ 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 +109,7 @@ struct task get_task_details(gint pid)
 			task.time = stime + utime;
 			task.old_time = task.time;
 			task.time_percentage = 0;
+			task.rss *= pagesize;
 			task.size = task.size / 1024;
 		}
 		task.uid = status.st_uid;