diff --git a/.travis.yml b/.travis.yml
index 590bbf9..8874373 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -75,7 +75,7 @@ matrix:
       addons:
         apt:
           sources: ['ubuntu-toolchain-r-test']
-          packages: ['g++-8', 'cppcheck', 'doxygen']
+          packages: ['g++-8', 'cppcheck', 'doxygen', 'graphviz']
       deploy:
         provider: pages
         skip_cleanup: true
@@ -132,7 +132,7 @@ script:
   - |
     if [ "${FORT_C_COMPILER}" = "gcc-8" ]; then
       cd docs  
-      make doxygen
+      make doxygen html
       cd ..
     fi
 
diff --git a/docs/index.md b/docs/index.md
index 1ae750e..94f0356 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -57,6 +57,7 @@ These pages contain the API documentation of **libfort** - simple library to cre
 |  5   | Blade Runner             | 1982 | 8.1    |             5     Blade Runner               1982   8.1     
 +------+--------------------------+------+--------+          
 ```
+
 ```text
              FT_PLAIN_STYLE                                                    FT_DOT_STYLE
 
@@ -74,6 +75,6 @@ These pages contain the API documentation of **libfort** - simple library to cre
 
 
         
-
+@copyright Copyright © 2017 - 2018 Seleznev Anton. The code is licensed under the [MIT License](http://opensource.org/licenses/MIT).
 @author Seleznev Anton
 @see https://github.com/seleznevae/libfort to download the source code
\ No newline at end of file