diff --git a/debian/changelog b/debian/changelog
index 819c999..4b2f893 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -5,6 +5,7 @@
   * Add Vcs-Git and Vcs-Browser.
   * Update debhelper to 11.
   * Add Depends: ${misc:Depends} to Depends.
+  * Change build systemm from cdbs to debhelper.
 
  -- Nobuhiro Iwamatsu <iwamatsu@debian.org>  Sat, 09 Jun 2018 07:02:39 +0900
 
diff --git a/debian/control b/debian/control
index e180561..1a3f66a 100644
--- a/debian/control
+++ b/debian/control
@@ -3,7 +3,7 @@
 Priority: optional
 Maintainer: Debian Bluetooth Maintainers <team+pkg-bluetooth@tracker.debian.org>
 Uploaders: Filippo Giunchedi <filippo@debian.org>, Nobuhiro Iwamatsu <iwamatsu@debian.org>
-Build-Depends: debhelper (>= 11), autotools-dev, cdbs
+Build-Depends: debhelper (>= 11), autotools-dev
 Standards-Version: 4.1.4
 Vcs-Git: https://salsa.debian.org/bluetooth-team/bluez-firmware.git
 Vcs-Browser: https://salsa.debian.org/bluetooth-team/bluez-firmware
diff --git a/debian/rules b/debian/rules
index f0e0748..42f08d0 100755
--- a/debian/rules
+++ b/debian/rules
@@ -1,12 +1,15 @@
 #!/usr/bin/make -f
-include /usr/share/cdbs/1/rules/buildcore.mk
-include /usr/share/cdbs/1/rules/debhelper.mk
-include /usr/share/cdbs/1/rules/simple-patchsys.mk
-include /usr/share/cdbs/1/class/autotools.mk
 
-DEB_CONFIGURE_EXTRA_FLAGS = --libdir=/lib
+DEB_DESTDIR := debian/bluez-firmware
 
-install/bluez-firmware::
-	mkdir -p $(DEB_DESTDIR)usr/share/doc/bluez-firmware
-	mv $(DEB_DESTDIR)lib/firmware/BCM-LEGAL.txt  \
-		$(DEB_DESTDIR)usr/share/doc/bluez-firmware/
+%:
+	dh $@
+
+override_dh_auto_configure:
+	dh_auto_configure -- --libdir=/lib
+
+override_dh_auto_install:
+	dh_auto_install
+	mkdir -p $(DEB_DESTDIR)/usr/share/doc/bluez-firmware
+	mv $(DEB_DESTDIR)/lib/firmware/BCM-LEGAL.txt  \
+		$(DEB_DESTDIR)/usr/share/doc/bluez-firmware/