Index: /trunk/src/VBox/Additions/linux/drm/Makefile.module.kms
===================================================================
--- /trunk/src/VBox/Additions/linux/drm/Makefile.module.kms	(revision 60616)
+++ /trunk/src/VBox/Additions/linux/drm/Makefile.module.kms	(revision 60617)
@@ -24,6 +24,11 @@
 MOD_NAME   = vboxvideo
 
+MY_KERNELRELEASE := $(KERNELRELEASE)
+ifeq ($(MY_KERNELRELEASE),)
+  # as of 2.6.16 KERNELRELEASE is only set if the kernel is configured
+  MY_KERNELRELEASE := $(KERNELVERSION)
+endif
 ifeq ($(filter 1.% 2.% 3.0.% 3.1.% 3.2.% 3.3.% 3.4.% 3.5.% 3.6.% 3.7.% \
-3.8.% 3.9.% 3.10.%,$(KERNELRELEASE)),)
+3.8.% 3.9.% 3.10.%,$(MY_KERNELRELEASE)),)
 MOD_OBJS   = HGSMIBase.o HGSMICommon.o HGSMIMemAlloc.o heapoffset.o \
              Modesetting.o vbox_drv.o vbox_fb.o vbox_irq.o vbox_main.o \