diff --git a/src/mathed/ChangeLog b/src/mathed/ChangeLog
index 838e1711ac..05158ec5ea 100644
--- a/src/mathed/ChangeLog
+++ b/src/mathed/ChangeLog
@@ -1,4 +1,8 @@
-<<<<<<< ChangeLog
+2005-02-12  Jürgen Spitzmüller  <j.spitzmueller@gmx.de>
+
+	* math_nestinset.C (doDispatch): normalize() cursor after moving up/down
+	(fixes assert and bug 1598).
+
 2005-02-09  Martin Vermeer  <martin.vermeer@hut.fi>
 
 	* math_gridinset.[hC]: add facilities for drawing/deleting partition
diff --git a/src/mathed/math_nestinset.C b/src/mathed/math_nestinset.C
index e789659696..9c992cfaee 100644
--- a/src/mathed/math_nestinset.C
+++ b/src/mathed/math_nestinset.C
@@ -509,6 +509,8 @@ void MathNestInset::doDispatch(LCursor & cur, FuncRequest & cmd)
 		cur.selHandle(cmd.action == LFUN_UPSEL);
 		if (!cur.up())
 			cmd = FuncRequest(LFUN_FINISHED_UP);
+		// fixes bug 1598. Please check!
+		cur.normalize();
 		break;
 
 	case LFUN_DOWNSEL:
@@ -516,6 +518,8 @@ void MathNestInset::doDispatch(LCursor & cur, FuncRequest & cmd)
 		cur.selHandle(cmd.action == LFUN_DOWNSEL);
 		if (!cur.down())
 			cmd = FuncRequest(LFUN_FINISHED_DOWN);
+		// fixes bug 1598. Please check!
+		cur.normalize();
 		break;
 
 	case LFUN_MOUSE_DOUBLE: