diff --git a/package/libgtk3/libgtk3.mk b/package/libgtk3/libgtk3.mk
index 7bd92cad9f..55912620eb 100644
--- a/package/libgtk3/libgtk3.mk
+++ b/package/libgtk3/libgtk3.mk
@@ -180,5 +180,15 @@ define HOST_LIBGTK3_INSTALL_CMDS
 		$(HOST_DIR)/usr/bin/gtk-encode-symbolic-svg
 endef
 
+# Create icon-theme.cache for each of the icon directories/themes
+# It's not strictly necessary but speeds up lookups
+ifeq ($(BR2_PACKAGE_LIBGTK3),y)
+define LIBGTK3_UPDATE_ICON_CACHE
+	find $(TARGET_DIR)/usr/share/icons -maxdepth 1 -mindepth 1 -type d \
+		-exec $(HOST_DIR)/usr/bin/gtk-update-icon-cache {} \;
+endef
+TARGET_FINALIZE_HOOKS += LIBGTK3_UPDATE_ICON_CACHE
+endif
+
 $(eval $(autotools-package))
 $(eval $(host-autotools-package))