diff --git a/games/sms_sdl/doinst.sh b/games/sms_sdl/doinst.sh
index 6dabb61160..4b35984395 100644
--- a/games/sms_sdl/doinst.sh
+++ b/games/sms_sdl/doinst.sh
@@ -6,3 +6,8 @@ if [ -x /usr/bin/update-mime-database ]; then
     /usr/bin/update-mime-database usr/share/mime > /dev/null 2>&1
 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
diff --git a/games/sms_sdl/sms_sdl.SlackBuild b/games/sms_sdl/sms_sdl.SlackBuild
index ca1f660f46..b4faea9300 100644
--- a/games/sms_sdl/sms_sdl.SlackBuild
+++ b/games/sms_sdl/sms_sdl.SlackBuild
@@ -6,6 +6,8 @@
 
 # Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.
 
+# 20230107 bkw: BUILD=5, fix doinst.sh.
+
 # 20211024 bkw: BUILD=4
 # - made a new icon, hopefully better looking.
 # - new-style icons.
@@ -30,7 +32,7 @@ cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=sms_sdl
 VERSION=${VERSION:-0.9.4a_r7.1}
-BUILD=${BUILD:-4}
+BUILD=${BUILD:-5}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}