Index: openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl,v
diff -u -r1.368.2.19 -r1.368.2.20
--- openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl	16 Jun 2019 19:58:52 -0000	1.368.2.19
+++ openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl	16 Jun 2019 20:07:43 -0000	1.368.2.20
@@ -721,10 +721,11 @@
 
     set geometry [::xo::cc query_parameter geometry ""]
     if {[string match "image/*" ${:mime_type}] && $geometry ne ""} {
-      if {![file isdirectory /tmp/$geometry]} {
-        file mkdir /tmp/$geometry
+      set tmpdir [ad_tmpdir]
+      if {![file isdirectory $tmpdir/$geometry]} {
+        file mkdir $tmpdir/$geometry
       }
-      set scaled_image /tmp/$geometry/${:revision_id}
+      set scaled_image $tmpdir/$geometry/${:revision_id}
       if {![file readable $scaled_image]} {
         set cmd [::util::which convert]
         if {$cmd ne ""} {