--- xfce4-session-4.12.1/icons/Makefile.in	2015-03-16 12:59:44.000000000 +0530
+++ xfce4-session/icons/Makefile.in	2019-02-02 11:27:12.459284514 +0530
@@ -384,7 +384,7 @@
 	128x128								\
 	scalable
 
-gtk_update_icon_cache = gtk-update-icon-cache -f -t $(datadir)/icons/hicolor
+gtk_update_icon_cache = true
 all: all-recursive
 
 .SUFFIXES: