diff --git a/.config/bash/module/git.sh b/.config/bash/module/git.sh
index 005a43d..bf55bcd 100644
--- a/.config/bash/module/git.sh
+++ b/.config/bash/module/git.sh
@@ -87,6 +87,37 @@ _git_current_branch()
   git branch --show-current 2> /dev/null
 }
 
+# Show origin's url.
+_git_origin_url()
+{
+  git remote get-url origin
+}
+
+# Get this dotfiles url.
+_git_dotfiles_url()
+{
+  echo 'https://git.voronind.com/voronind/linux.git'
+}
+
+# Check if current git repo is this dotfiles.
+_git_is_dotfiles()
+{
+  # [[ "$(_git_origin_url)" = "$(_git_dotfiles_url)" ]]
+  local dir="${PWD}"
+
+  while [[ "${dir}" != "" ]]; do
+    if [[ -d "${dir}/.git" ]]; then
+      if [[ "${dir}" = "${HOME}" ]]; then
+        return 0
+      else
+        return 1
+      fi
+    fi
+
+    dir="${dir%/*}"
+  done
+}
+
 # autocomplete.
 _completion_loader git            &> /dev/null
 __git_complete gps _git_push      &> /dev/null
diff --git a/.config/bash/module/ps1.sh b/.config/bash/module/ps1.sh
index 91142f5..8a645db 100644
--- a/.config/bash/module/ps1.sh
+++ b/.config/bash/module/ps1.sh
@@ -44,9 +44,11 @@ __prompt_command()
   # PS1+="\${PWD}"
 
   # Add git branch if available.
-  local git_branch="$(_git_current_branch)"
-  if [[ "${git_branch}" != "" ]]; then
-    [[ "${git_branch}" =~ (master|main) ]] || PS1+=" ${color_bblue}@${git_branch}"
+  if ! _git_is_dotfiles; then
+    local git_branch="$(_git_current_branch)"
+    if [[ "${git_branch}" != "" ]]; then
+      PS1+=" ${color_bblue}@${git_branch}"
+    fi
   fi
 
   # set error red