diff --git a/chezmoi/dot_zshrc.d/executable_tag.zsh b/chezmoi/dot_zshrc.d/executable_tag.zsh
index 7f75951..4254571 100644
--- a/chezmoi/dot_zshrc.d/executable_tag.zsh
+++ b/chezmoi/dot_zshrc.d/executable_tag.zsh
@@ -1,5 +1,11 @@
 if command -v tag &> /dev/null; then
-  export TAG_SEARCH_PROG=ag  # replace with rg for ripgrep
-  tag() { command tag "$@"; source ${TAG_ALIAS_FILE:-/tmp/tag_aliases} 2>/dev/null }
-  alias ag=tag  # replace with rg for ripgrep
+  if command -v ag &> /dev/null; then
+    tag() { export TAG_SEARCH_PROG=ag; command tag "$@"; source ${TAG_ALIAS_FILE:-/tmp/tag_aliases} 2>/dev/null }
+    alias ag=tag
+  fi
+
+  if command -v rg &> /dev/null; then
+    trg() { export TAG_SEARCH_PROG=rg; command tag "$@"; source ${TAG_ALIAS_FILE:-/tmp/tag_aliases} 2>/dev/null }
+    alias rg=trg
+  fi
 fi