diff --git a/batman-adv/Makefile b/batman-adv/Makefile
index c59ebce..ed3e1c2 100644
--- a/batman-adv/Makefile
+++ b/batman-adv/Makefile
@@ -9,9 +9,9 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=batman-adv
 
-PKG_VERSION:=2019.4
+PKG_VERSION:=2019.5
 PKG_RELEASE:=0
-PKG_HASH:=de07be3f46dddadc3f9608ca11814ecae534c65ccd7cbfeb9762f8e90a17f660
+PKG_HASH:=29fd11b07842f40fee1782bf7ea512278fc4e483bac3c52cf74f8af0f6fe28ec
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://downloads.open-mesh.org/batman/releases/batman-adv-$(PKG_VERSION)
diff --git a/batman-adv/src/compat-hacks.h b/batman-adv/src/compat-hacks.h
index 9dd4597..2085767 100644
--- a/batman-adv/src/compat-hacks.h
+++ b/batman-adv/src/compat-hacks.h
@@ -118,6 +118,18 @@ static inline int batadv_access_ok(int type, const void __user *p,
 
 #endif /* < KERNEL_VERSION(5, 0, 0) */
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 0)
+
+#ifndef fallthrough
+#if __GNUC__ > 7 && !defined(__CHECKER__)
+# define fallthrough                    __attribute__((__fallthrough__))
+#else
+# define fallthrough                    do {} while (0)  /* fallthrough */
+#endif
+#endif
+
+#endif /* < KERNEL_VERSION(5, 4, 0) */
+
 /* <DECLARE_EWMA> */
 
 #include <linux/version.h>