diff --git a/network/claws-mail/claws-mail.SlackBuild b/network/claws-mail/claws-mail.SlackBuild
index c3b21146d9..4aac6817cb 100644
--- a/network/claws-mail/claws-mail.SlackBuild
+++ b/network/claws-mail/claws-mail.SlackBuild
@@ -24,7 +24,7 @@
 
 PRGNAM=claws-mail
 VERSION=3.7.6
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}
 
 # Automatically determine the architecture we're building on:
diff --git a/network/claws-mail/doinst.sh b/network/claws-mail/doinst.sh
index 3857649f50..9f1846bc38 100644
--- a/network/claws-mail/doinst.sh
+++ b/network/claws-mail/doinst.sh
@@ -1,3 +1,10 @@
 if [ -x /usr/bin/update-desktop-database ]; then
   /usr/bin/update-desktop-database -q usr/share/applications &> /dev/null
 fi
+
+if [ -e usr/share/icons/hicolor/icon-theme.cache ]; then
+  if [ -x /usr/bin/gtk-update-icon-cache ]; then
+    /usr/bin/gtk-update-icon-cache usr/share/icons/hicolor >/dev/null 2>&1
+  fi
+fi
+