diff --git a/system/virtualbox-kernel-addons/virtualbox-kernel-addons.SlackBuild b/system/virtualbox-kernel-addons/virtualbox-kernel-addons.SlackBuild
index 3fa214a975..14cd4888ee 100644
--- a/system/virtualbox-kernel-addons/virtualbox-kernel-addons.SlackBuild
+++ b/system/virtualbox-kernel-addons/virtualbox-kernel-addons.SlackBuild
@@ -2,7 +2,7 @@
 
 # Slackware build script for virtualbox-kernel-addons
 
-# Copyright 2008-2017 Heinz Wiesinger, Amsterdam, The Netherlands
+# Copyright 2008-2019 Heinz Wiesinger, Amsterdam, The Netherlands
 # All rights reserved.
 #
 # Redistribution and use of this script, with or without modification, is
@@ -24,7 +24,7 @@
 
 PRGNAM=virtualbox-kernel-addons
 VERSION=${VERSION:-5.0.40}
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}
 
 KERNEL=${KERNEL:-$(uname -r)}
@@ -65,6 +65,14 @@ find -L . \
 
 mkdir -p $PKG/lib/modules/$KERNEL/misc
 
+KERNEL_MINOR=$(echo $KERNEL | cut -d "." -f 2)
+KERNEL_PATCH=$(echo $KERNEL | cut -d "." -f 3)
+
+# Work around API break introduced in kernel 4.4.168
+if [ "$KERNEL_MINOR" = 4 -a "$KERNEL_PATCH" -ge 168 ]; then
+  sed -i "s|KERNEL_VERSION(4, 9, 0)|KERNEL_VERSION(4, 4, 168)|" vboxguest/r0drv/linux/memobj-r0drv-linux.c
+fi
+
 for i in vboxguest vboxsf vboxvideo; do
   cd $i
     make KERN_DIR=$KERNELPATH