Index: lams_gradebook/src/java/org/lamsfoundation/lams/gradebook/dto/GBActivityArchiveGridRowDTO.java
===================================================================
diff -u -r693e7c3c9dae87bce413e123e3e45612ca604087 -rd80d90361b631c959813fa15568d73c7b5a44bd7
--- lams_gradebook/src/java/org/lamsfoundation/lams/gradebook/dto/GBActivityArchiveGridRowDTO.java	(.../GBActivityArchiveGridRowDTO.java)	(revision 693e7c3c9dae87bce413e123e3e45612ca604087)
+++ lams_gradebook/src/java/org/lamsfoundation/lams/gradebook/dto/GBActivityArchiveGridRowDTO.java	(.../GBActivityArchiveGridRowDTO.java)	(revision d80d90361b631c959813fa15568d73c7b5a44bd7)
@@ -55,7 +55,7 @@
 	    ret.add(startDate != null ? convertDateToString(startDate, null) : CELL_EMPTY);
 	    ret.add(finishDate != null ? convertDateToString(finishDate, null) : CELL_EMPTY);
 	    ret.add(feedback);
-	    ret.add(lessonMark.toString());
+	    ret.add(lessonMark != null ? GradebookUtil.niceFormatting(lessonMark) : CELL_EMPTY);
 	    ret.add(mark != null ? GradebookUtil.niceFormatting(mark) : CELL_EMPTY);
 	}