diff --git a/.config/fish/config.fish b/.config/fish/config.fish
index 10b7ac8..6e6e657 100644
--- a/.config/fish/config.fish
+++ b/.config/fish/config.fish
@@ -8,9 +8,5 @@ set -x MANPAGER "sh -c 'col -bx | batcat -l man -p'"
 # SSH
 fish_ssh_agent
 
-# GL4Dummies
-set -gx PATH $HOME/local/bin $PATH
-set -gx LD_LIBRARY_PATH $HOME/local/lib $LD_LIBRARY_PATH
-
 # Exercism
 set -gx PATH ~/bin $PATH
diff --git a/installgl4D.sh b/installgl4D.sh
index 5bc1573..c44e4e8 100644
--- a/installgl4D.sh
+++ b/installgl4D.sh
@@ -15,12 +15,35 @@ rm -rf GL4Dummies
 # Fix for shared libraries (https://stackoverflow.com/a/9395355)
 sudo ldconfig
 
+# changing env variables path and ld_library_path
+# to correct locations to all the shell installed
+
+# to .bashrc if exists
+if [ -f $HOME/.bashrc ] ; then
+    echo "" >> $HOME/.bashrc
+    echo "# GL4Dummies" >> $HOME/.bashrc
+    echo "export PATH=\$PATH:\$HOME/local/bin" >> $HOME/.bashrc
+    echo "export LD_LIBRARY_PATH=\$LD_LIBRARY_PATH:\$HOME/local/lib" >> $HOME/.bashrc
+    echo "" >> $HOME/.bashrc
+fi
+
+# to .zshrc if exists
+if [ -f $HOME/.zshrc ] ; then
+    echo "" >> $HOME/.zshrc
+    echo "# GL4Dummies" >> $HOME/.zshrc
+    echo "export PATH=\$PATH:\$HOME/local/bin" >> $HOME/.zshrc
+    echo "export LD_LIBRARY_PATH=\$LD_LIBRARY_PATH:\$HOME/local/lib" >> $HOME/.zshrc
+    echo "" >> $HOME/.zshrc
+fi
+
+# if config.fish exists
+if [ -f $HOME/.config/fish/config.fish ] ; then
+    echo "" >> $HOME/.config/fish/config.fish
+    echo "# GL4Dummies" >> $HOME/.config/fish/config.fish
+    echo "set -gx PATH \$HOME/local/bin \$PATH" >> $HOME/.config/fish/config.fish
+    echo "set -gx LD_LIBRARY_PATH \$HOME/local/lib $LD_LIBRARY_PATH" >> $HOME/.config/fish/config.fish
+    echo "" >> $HOME/.config/fish/config.fish
+fi
+
 echo ""
-echo ""
-echo "Add theses lines to your ~/.bashrc"
-echo "export PATH=\$PATH:\$HOME/local/bin"
-echo "export LD_LIBRARY_PATH=\$LD_LIBRARY_PATH:\$HOME/local/lib"
-echo ""
-echo "If you use Fish, add theses lines to your ~/.config/fish/config.fish"
-echo "set -gx PATH $HOME/local/bin $PATH"
-echo "set -gx LD_LIBRARY_PATH $HOME/local/lib $LD_LIBRARY_PATH"
+echo "You may need to restart your shell to apply changes."