Index: openacs-4/packages/acs-bootstrap-installer/installer.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-bootstrap-installer/installer.tcl,v
diff -u -N -r1.31 -r1.31.2.1
--- openacs-4/packages/acs-bootstrap-installer/installer.tcl	11 Jul 2018 07:31:22 -0000	1.31
+++ openacs-4/packages/acs-bootstrap-installer/installer.tcl	13 Mar 2019 10:06:42 -0000	1.31.2.1
@@ -22,7 +22,7 @@
     Return an HTML input widget for a parameter with an
     indication of whether the param is mandatory.
 } {
-    set type_attribute [ad_decode $type "" "" "type=\"$type\""]
+    set type_attribute [expr {$type eq "" ? "" : "type=\"$type\""}]
 
     if { $value ne "" } {
         append extra_attributes " value=\"[ns_quotehtml $value]\""