--- comedi/Makefile.am	2007-09-30 16:42:11.000000000 +0200
+++ /home/rpmbuild/Makefile.am	2007-10-16 14:32:26.000000000 +0200
@@ -26,7 +26,7 @@
 install-data-local:
 	$(MAKE) -I@abs_builddir@ -C $(LINUX_DIR) M=@abs_builddir@ CC="$(LINUX_CC) -I@abs_top_builddir@/ \
 		-I@abs_top_srcdir@/include $(RTAI_CFLAGS) $(RTLINUX_CFLAGS)" INSTALL_MOD_DIR=$(COMEDI_MOD_DIR) \
-		INSTALL_MOD_PATH="$(DESTDIR)$(prefix)" modules_install
+		INSTALL_MOD_PATH="$(DESTDIR)" modules_install
 clean-local:
 	$(MAKE) -I@abs_builddir@ -C $(LINUX_DIR) M=@abs_builddir@ CC="$(LINUX_CC) -I@abs_top_builddir@/ \
 		-I@abs_top_srcdir@/include $(RTAI_CFLAGS) $(RTLINUX_CFLAGS)" clean