diff --git a/CONFIG.i386 b/CONFIG.i386
index 5b3a061..a6071c6 100644
--- a/CONFIG.i386
+++ b/CONFIG.i386
@@ -7,6 +7,12 @@
 # CONFIG.xxx file to start with.
 ARCH=i386
 
+# iBCS is a loadable kernel module. It MUST be built against the
+# source tree of the kernel you are running (or intend to load
+# it in). More specifically it must be built against the include
+# and config files belonging to the relevant kernel.
+KERNEL=/usr/src/linux
+
 # If you intend to run on a multiprocessor SMP system you will need
 # this enabled. You need to set this correctly. An SMP iBCS module
 # will not load against a non-SMP kernel (the symbol apic_reg is
diff --git a/CONFIG.sparc b/CONFIG.sparc
index a3f0298..4466cc2 100644
--- a/CONFIG.sparc
+++ b/CONFIG.sparc
@@ -7,6 +7,12 @@
 # CONFIG.xxx file to start with.
 ARCH=sparc
 
+# iBCS is a loadable kernel module. It MUST be built against the
+# source tree of the kernel you are running (or intend to load
+# it in). More specifically it must be built against the include
+# and config files belonging to the relevant kernel.
+KERNEL=/usr/src/linux
+
 # If you want to use versioned symbol names in an attempt to allow the
 # iBCS module to load against other, compatible kernel versions enable
 # this. Be warned that I have observed that two different builds of
diff --git a/ChangeLog b/ChangeLog
index 4ce4cad..20e59ba 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 Thu Oct 15 21:39:16 BST 1998
 
+	* Added the location of the kernel source as an option
+	  in the CONFIG. Hopefully this will make it a little
+	  more obvious that iBCS is *dependant* on the kernel.
+	  -- Mike
+
 	* Set SO_BSDCOMPAT on sockets. SYSV has BSD handling of
 	  ICMP errors on UDP sockets rather than RFC conformance.
 	  I think...
diff --git a/iBCSemul/Makefile b/iBCSemul/Makefile
index a27a2e1..a408fbe 100644
--- a/iBCSemul/Makefile
+++ b/iBCSemul/Makefile
@@ -1,7 +1,7 @@
 #
 # Makefile for the iBCS emulator files
 #
-# $Id: Makefile,v 1.62 1998/06/29 21:49:51 jaggy Exp $
+# $Id: Makefile,v 1.63 1998/10/15 20:48:37 jaggy Exp $
 # $Source: /nfs4/sophia/home/mjagdis/src/ibcs.cvs/ibcs/iBCSemul/Makefile,v $
 #
 
@@ -117,7 +117,7 @@ LDMODFLAGS=-m elf_i386
 endif
 
 ifeq ($(USE_VERSIONS),yes)
-MODOPTS := -DMODVERSIONS -include /usr/include/linux/modversions.h
+MODOPTS := -DMODVERSIONS -include $(KERNEL)/include/linux/modversions.h
 endif
 
 ifeq ($(SMP),yes)
@@ -125,7 +125,7 @@ SMPOPTS := -D__SMP__=1
 endif
 
 CFLAGS = -D__KERNEL__=1 -DMODULE -D__NO_VERSION__ \
-	-I../include -I/usr/src/linux/include \
+	-I../include -I$(KERNEL)/include \
 	-Wall -Wstrict-prototypes \
 	-O2 -fomit-frame-pointer $(ARCH_FLAGS) \
 	-DSOCKSYS_MAJOR=$(SOCKSYS_MAJOR) $(EMUOPTS) $(MODOPTS) $(SMPOPTS)