Index: openacs-4/packages/acs-tcl/tcl/memoize-procs-naviserver.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-tcl/tcl/memoize-procs-naviserver.tcl,v
diff -u -N -r1.9.2.2 -r1.9.2.3
--- openacs-4/packages/acs-tcl/tcl/memoize-procs-naviserver.tcl	8 Aug 2020 11:19:23 -0000	1.9.2.2
+++ openacs-4/packages/acs-tcl/tcl/memoize-procs-naviserver.tcl	28 Oct 2020 15:39:19 -0000	1.9.2.3
@@ -58,7 +58,7 @@
     # after the util_memoize cache was created. Therefore, is safe to
     # use the util_memoize when this proc is available.
     #
-    if {[info commands ::util_memoize_flush] ne ""} {
+    if {[namespace which ::util_memoize_flush] ne ""} {
         if {$max_age ne ""} {
             set max_age "-expires $max_age"
         }