diff --git a/doc/en/CMakeLists.txt b/doc/en/CMakeLists.txt
index 34e10ce..89b0c4d 100644
--- a/doc/en/CMakeLists.txt
+++ b/doc/en/CMakeLists.txt
@@ -1,3 +1 @@
 kdoctools_create_handbook(index.docbook INSTALL_DESTINATION ${HTML_INSTALL_DIR}/en SUBDIR kdiff3)
-
-install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/kdiff3.1 DESTINATION ${MAN_INSTALL_DIR})
\ No newline at end of file
diff --git a/doc/en/kdiff3.1 b/doc/en/kdiff3.1
deleted file mode 100644
index 80de937..0000000
--- a/doc/en/kdiff3.1
+++ /dev/null
@@ -1,87 +0,0 @@
-.TH "KDIFF3" "1" 
-.SH "NAME" 
-KDiff3 \(em compares two or three input files or directories 
-.SH "SYNOPSIS" 
-.PP 
-\fBKDiff3\fR [\fBQT options\fP]  [\fBKDE options\fP]  [\fBKDiff3 options\fP]  [\fB\fIFile1/base\fR\fP]  [\fB\fIFile2\fR\fP]  [\fB\fIFile3\fR\fP]  
-.SH "DESCRIPTION" 
-.PP 
-This manual page briefly documents the 
-\fBKDiff3\fR tool. 
-.PP 
-For comprehensive help, please see \fBkhelpcenter help:/kdiff3\fR. 
- 
-.PP 
-\fBKDiff3\fR is a program that 
- 
-.IP "   \(bu" 6 
-compares or merges two or three text input files or directories 
-.IP "   \(bu" 6 
-shows the differences line by line and character by character 
-.IP "   \(bu" 6 
-provides an automatic merge-facility and 
-.IP "   \(bu" 6 
-an integrated editor for comfortable solving of merge-conflicts 
-.IP "   \(bu" 6 
-supports Unicode, UTF-8 and other codecs 
-.IP "   \(bu" 6 
-supports KIO on KDE (allows accessing ftp, sftp, fish, smb etc.) 
-.IP "   \(bu" 6 
-Printing of differences 
-.IP "   \(bu" 6 
-Manual alignment of lines 
-.IP "   \(bu" 6 
-Automatic merging of version control history ($Log$) 	 
-.SH "OPTIONS" 
-.PP 
-This program follows the usual GNU command line syntax, 
-with long options starting with two dashes (`\-').  A summary of 
-options is included below. For a full summary of options, run 
-\fBKDiff3 \-\-help\fR. 
- 
-.IP "\fB-m, \-\-merge\fP         " 10 
-Merge the input. 
-.IP "\fB-b, \-\-base file\fP         " 10 
-Explicit base file. For compatibility with certain tools. 
-.IP "\fB-o, \-\-output file\fP         " 10 
-Output file. Implies \-m. E.g.: \-o newfile.txt 
-.IP "\fB\-\-out file\fP         " 10 
-Output file, again. (For compatibility with certain tools.) 
-.IP "\fB\-\-auto\fP         " 10 
-No GUI if all conflicts are auto-solvable. (Needs \-o file) 
-.IP "\fB\-\-qall\fP         " 10 
-Don't solve conflicts automatically. (For compatibility...) 
-.IP "\fB-L1 alias\fP 		  " 10 
-Visible name replacement for first file/base file. 
-.IP "\fB-L2 alias\fP 		  " 10 
-Visible name replacement for second file. 
-.IP "\fB-L3 alias\fP 		  " 10 
-Visible name replacement for third file. 
-.IP "\fB-L, \-\-fname alias\fP 		  " 10 
-Visible name replacement. May by supplied for each input. 
-.IP "\fB\-\-cs string\fP 		  " 10 
-Change a setting, e. g. \-\-cs "AutoAdvance=1". 
-.IP "\fB\-\-confighelp\fP 		  " 10 
-Show a list of all settings and their values. 
-.IP "\fB\-\-config file \fP 		  " 10 
-Use a different settings file. 
-.IP "\fB\-\-author\fP 		  " 10 
-Show author of program. 
-.IP "\fB-v, \-\-version\fP 		  " 10 
-Show version of program. 
-.IP "\fB\-\-license\fP 		  " 10 
-Show license of program. 
-.SH "AUTHOR" 
-.PP 
-This manual page was written by Eike Sauer <eike@debian.org> for 
-the \fBDebian\fP system (but may be used by others).  Permission is 
-granted to copy, distribute and/or modify this document under 
-the terms of the GNU General Public License, Version 2 
-(or, at your option, any later version published by the Free 
-Software Foundation). 
- 
-.PP 
-On Debian systems, the complete text of the GNU General Public 
-License can be found in /usr/share/common-licenses/GPL. 
- 
-.\" created by instant / docbook-to-man