diff --git a/fwnn.changes b/fwnn.changes
index d2d1499..50187f4 100644
--- a/fwnn.changes
+++ b/fwnn.changes
@@ -1,3 +1,19 @@
+-------------------------------------------------------------------
+Fri Dec 25 16:08:38 UTC 2015 - i@marguerite.su
+
+- add Requires: fcwnndev to fkwnndev and fwnn-devel,
+  or the header files of the later two would be
+  dangling symlinks
+- add Requires: fkwnn/fwnn to fcwnn, or files in etc/FreeWnn
+  would be dangling symlinks
+- add Requires: fcwnn to ftwnn, or files in etc/FreeWnn
+  would be dangling symlinks
+- remove redundant Requires: fwnncom from fcwnn, ftwnn,
+  because they requires fcwnncom that has already required
+  fwnncom
+- the dangling symlinks mentioned above can't be fixed
+  by fdupes simply
+
 -------------------------------------------------------------------
 Wed Sep 16 10:11:56 UTC 2015 - werner@suse.de
 
diff --git a/fwnn.spec b/fwnn.spec
index cea0a40..1ee9a7b 100644
--- a/fwnn.spec
+++ b/fwnn.spec
@@ -41,7 +41,7 @@ Patch14:        FreeWnn-trad_cpp.patch
 BuildRequires:  fdupes
 BuildRequires:  ncurses-devel
 BuildRequires:  tcpd-devel
-Requires:       fwnncom
+Requires:       fwnncom = %{version}
 # %{_sbindir}/useradd
 Requires(pre):	shadow
 Requires(pre):	%insserv_prereq %fillup_prereq
@@ -74,6 +74,7 @@ This package contains only the Japanese server.
 %package -n fwnn-devel
 Summary:        Development Library and Header Files for FreeWnn
 Group:          Development/Libraries/C and C++
+Requires:       fcwnndev = %{version}
 Requires:       fwnn = %{version}
 Provides:       fwnndev = %{version}
 Obsoletes:      fwnndev < %{version}
@@ -95,8 +96,9 @@ of the Wnn System.
 %package -n fcwnn
 Summary:        Free cWnn Chinese Input System (Mainland China)
 Group:          System/I18n/Chinese
-Requires:       fcwnncom
-Requires:       fwnncom
+Requires:       fcwnncom = %{version}
+Requires:       fkwnn = %{version}
+Requires:       fwnn = %{version}
 Requires(pre):	shadow
 Requires(pre): %insserv_prereq %fillup_prereq
 Requires(post):	fcwnncom
@@ -107,7 +109,7 @@ Free cWnn Chinese Input System (mainland China).
 %package -n fcwnncom
 Summary:        Free cWnn/tWnn Chinese Input System Common Files (Mainland and Taiwan)
 Group:          System/I18n/Chinese
-Requires:       fwnncom
+Requires:       fwnncom = %{version}
 Requires(pre):	shadow
 
 %description -n fcwnncom
@@ -127,8 +129,8 @@ client programs that use the Chinese Input System, Free cWnn.
 %package -n ftwnn
 Summary:        Free tWnn Chinese Input System (Taiwan)
 Group:          System/I18n/Chinese
-Requires:       fcwnncom
-Requires:       fwnncom
+Requires:       fcwnn = %{version}
+Requires:       fcwnncom = %{version}
 Requires(pre):	shadow
 Requires(pre):	%insserv_prereq %fillup_prereq
 Requires(post):	fcwnncom
@@ -139,7 +141,7 @@ Free tWnn Chinese input system (Taiwan).
 %package -n fkwnn
 Summary:        Free kWnn Korean Input System
 Group:          System/I18n/Korean
-Requires:       fwnncom
+Requires:       fwnncom = %{version}
 Requires(pre):	shadow
 Requires(pre):	%insserv_prereq %fillup_prereq
 
@@ -149,6 +151,7 @@ Free kWnn Korean input system.
 %package -n fkwnndev
 Summary:        Development Libraries and Header Files for Free kWnn
 Group:          Development/Libraries/C and C++
+Requires:       fcwnndev = %{version}
 Requires:       fkwnn = %{version}
 
 %description -n fkwnndev