diff --git a/install.sh b/install.sh
index 9535d1b..97c1a9e 100755
--- a/install.sh
+++ b/install.sh
@@ -12,7 +12,6 @@ for zsh_file_name in z{shenv,shrc,login}; do
   cat > "$zsh_file" <<EOF
 #!/usr/bin/env zsh
 
-export DOTFILES_PATH="$PWD"
-source "\$DOTFILES_PATH/$zsh_file_name"
+source "$PWD/$zsh_file_name"
 EOF
 done
diff --git a/zlogin b/zlogin
index fd1605e..78c703f 100644
--- a/zlogin
+++ b/zlogin
@@ -1,5 +1,5 @@
 #!/usr/bin/env zsh
 
-if [[ -n "$DOTFILES_PATH" ]]; then
-  python "$DOTFILES_PATH/welcome/main.py"
-fi
+DOTFILES_PATH="${0:h}"
+
+python "$DOTFILES_PATH/welcome/main.py"
diff --git a/zshenv b/zshenv
index 5ede198..3be8b37 100644
--- a/zshenv
+++ b/zshenv
@@ -1,10 +1,8 @@
 #!/usr/bin/env zsh
 
-if [[ -n "$DOTFILES_PATH" ]]; then
-  for script in functions path exports; do
-    source "$DOTFILES_PATH/lib/$script.zsh"
-    source_if_exists "$DOTFILES_PATH/custom/$script.zsh"
-  done
-else
-  echo "please, set DOTFILES_PATH to the path to your dotfiles directory" >&2
-fi
+DOTFILES_PATH="${0:h}"
+
+for script in functions path exports; do
+  source "$DOTFILES_PATH/lib/$script.zsh"
+  source_if_exists "$DOTFILES_PATH/custom/$script.zsh"
+done
diff --git a/zshrc b/zshrc
index 4ee333a..745964a 100755
--- a/zshrc
+++ b/zshrc
@@ -1,11 +1,11 @@
 #!/usr/bin/env zsh
 
-if [[ -n "$DOTFILES_PATH" ]]; then
-  for script in oh-my-zsh aliases widgets theme; do
-    source "$DOTFILES_PATH/lib/$script.zsh"
-    source_if_exists "$DOTFILES_PATH/custom/$script.zsh"
-  done
+DOTFILES_PATH="${0:h}"
 
-  run_before rbenv 'eval "$(rbenv init -)"'
-  run_before sdk 'source_if_exists "$SDKMAN_DIR/bin/sdkman-init.sh"'
-fi
+for script in oh-my-zsh aliases widgets theme; do
+  source "$DOTFILES_PATH/lib/$script.zsh"
+  source_if_exists "$DOTFILES_PATH/custom/$script.zsh"
+done
+
+run_before rbenv 'eval "$(rbenv init -)"'
+run_before sdk 'source_if_exists "$SDKMAN_DIR/bin/sdkman-init.sh"'