diff --git a/uim.spec b/uim.spec
index f1ef326..edff2c3 100644
--- a/uim.spec
+++ b/uim.spec
@@ -1,9 +1,11 @@
 %global inst_xinput %{_sbindir}/update-alternatives --install %{_sysconfdir}/X11/xinit/xinputrc xinputrc %{_sysconfdir}/X11/xinit/xinput.d/uim.conf 50
 %global uninst_xinput %{_sbindir}/update-alternatives --remove xinputrc %{_sysconfdir}/X11/xinit/xinput.d/uim.conf
 
+%bcond_with	canna
+
 Name:		uim
 Version:	1.8.6
-Release:	17%{?dist}
+Release:	18%{?dist}
 # uim itself is licensed under BSD
 # scm/py.scm, helper/eggtrayicon.[ch], qt/pref-kseparator.{cpp,h}
 #   and qt/chardict/chardict-kseparator.{cpp,h} is licensed under LGPLv2+
@@ -14,7 +16,10 @@ URL:		https://github.com/uim/uim/
 BuildRequires:	libXft-devel libX11-devel libXext-devel libXrender-devel libXau-devel libXdmcp-devel libXt-devel
 BuildRequires:	libgcroots-devel
 BuildRequires:	gtk2-devel gtk3-devel ncurses-devel
-BuildRequires:	anthy-devel Canna-devel eb-devel gettext desktop-file-utils
+%if %{with canna}
+BuildRequires:	Canna-devel
+%endif
+BuildRequires:	anthy-devel eb-devel gettext desktop-file-utils
 BuildRequires:	qt-devel cmake
 BuildRequires:	libedit-devel libcurl-devel sqlite-devel expat-devel
 BuildRequires:	m17n-lib-devel m17n-db-devel
@@ -90,6 +95,7 @@ Requires:	uim = %{version}-%{release}
 Requires(post):	gtk3 /usr/bin/uim-module-manager
 Requires(postun): gtk3 /usr/bin/uim-module-manager
 
+%if %{with canna}
 %package	canna
 Summary:	Canna support for Uim
 Group:		System Environment/Libraries
@@ -97,6 +103,7 @@ Requires:	Canna
 Requires:	uim = %{version}-%{release}
 Requires(post):	gtk3 /usr/bin/uim-module-manager
 Requires(postun): gtk3 /usr/bin/uim-module-manager
+%endif # with canna
 
 %package	skk
 Summary:	SKK support for Uim
@@ -169,8 +176,10 @@ This package provides the KDE applet.
 %description	anthy
 This package provides support for Anthy, a Japanese input method.
 
+%if %{with canna}
 %description	canna
 This package provides support for Canna, a Japanese input method.
+%endif
 
 %description	skk
 This package provides support for SKK, a Japanese input method.
@@ -187,7 +196,9 @@ autoconf
 
 %build
 %configure --with-x --with-xft \
+%if %{with canna}
 	--with-canna \
+%endif
 	--with-anthy --with-anthy-utf8 \
 	--with-m17nlib \
 	--with-eb --with-eb-conf=%{_libdir}/eb.conf \
@@ -283,6 +294,7 @@ if [ "$1" = "0" ]; then
 	/usr/bin/uim-module-manager --path %{_localstatedir}/lib/uim --unregister anthy-utf8 > /dev/null 2>&1 || :
 fi
 
+%if %{with canna}
 %post canna
 /usr/bin/uim-module-manager --path %{_localstatedir}/lib/uim --register canna > /dev/null 2>&1 || :
 
@@ -290,6 +302,7 @@ fi
 if [ "$1" = "0" ]; then
 	/usr/bin/uim-module-manager --path %{_localstatedir}/lib/uim --unregister canna > /dev/null 2>&1 || :
 fi
+%endif
 
 %post skk
 /usr/bin/uim-module-manager --path %{_localstatedir}/lib/uim --register skk > /dev/null 2>&1 || :
@@ -445,6 +458,7 @@ fi
 %{_datadir}/uim/pixmaps/anthy*.png
 %dir %{_datadir}/uim
 
+%if %{with canna}
 %files	canna
 %doc AUTHORS ChangeLog* NEWS README
 %license COPYING
@@ -452,6 +466,7 @@ fi
 # BSD or LGPLv2
 %{_datadir}/uim/pixmaps/canna.png
 %dir %{_datadir}/uim
+%endif
 
 %files	skk
 %doc AUTHORS ChangeLog* NEWS README
@@ -474,6 +489,9 @@ fi
 %dir %{_datadir}/uim
 
 %changelog
+* Tue Aug 28 2018 Akira TAGOH <tagoh@redhat.com> - 1.8.6-18
+- Make canna subpackage conditional.
+
 * Tue Feb 27 2018 Akira TAGOH <tagoh@redhat.com> - 1.8.6-17
 - Add BR: gcc gcc-c++
 - Fix the buffer overflow. (#1549478)