Sebastian Knapp:

package/base/cron/00-updates

@@ -26,7 +26,7 @@ exec 2>&1
 
 kver=$(uname -r)
 echo "Running depmod ($kver) ..."
-depmod -a -F /boot/System.map_$kver $kver
+depmod -a -F /boot/System.map-$kver $kver
 
 echo "Running ldconfig ..."
 ldconfig

package/base/linux/linux.conf

@@ -480,7 +480,7 @@ main_lx() {
 		;;
 	esac
 	cp -vf .config $root/boot/kconfig_${lx_kernelrelease}
-	cp -vf System.map $root/boot/System.map_${lx_kernelrelease}
+	cp -vf System.map $root/boot/System.map-${lx_kernelrelease}
 	[ "$default" ] && cp -vf System.map $root/boot/System.map
 
 	echo "Building the modules ..."
@@ -492,7 +492,7 @@ main_lx() {
 	else
 		eval $MAKE modules_install DEPMOD=/bin/true
 		echo "Running 'depmod -a -q -F /boot/System.map ${lx_kernelrelease}' .."
-		depmod -a -q -F /boot/System.map_${lx_kernelrelease} ${lx_kernelrelease}
+		depmod -a -q -F /boot/System.map-${lx_kernelrelease} ${lx_kernelrelease}
 		for x in /lib/modules/${lx_kernelrelease}/modules.*
 		do [ -f $x ] && add_flist $x; done
 	fi