diff -r a3d65f3b495f -r 4e6fc3336336 test/Tools/isac/Knowledge/polyeq-2.sml
--- a/test/Tools/isac/Knowledge/polyeq-2.sml	Tue Apr 21 16:16:11 2020 +0200
+++ b/test/Tools/isac/Knowledge/polyeq-2.sml	Tue Apr 21 16:53:17 2020 +0200
@@ -256,9 +256,9 @@
 (* the invisible parentheses are as expected *)
 
 val t = str2term "(x + 1) * (x + 2) - (3 * x - 2) ^^^ 2 - ((2 * x - 1) ^^^ 2 + (3 * x - 1) * (x + 1)) = 0";
-trace_rewrite:=(*true*)false;
+Trace.trace_rewrite:=(*true*)false;
 rewrite_set_ thy false expand_binoms t;
-trace_rewrite:=false;
+Trace.trace_rewrite:=false;
 
 
 "----------- interSteps ([1],Res); on Schalk Is86Bsp5-------------";