diff --git a/zsh/prompt.zsh b/zsh/prompt.zsh
index 4a22f2d..ed6218d 100644
--- a/zsh/prompt.zsh
+++ b/zsh/prompt.zsh
@@ -74,8 +74,15 @@ zshrc_prompt_precmd() {
 
 	# suffix characters in first and second line
 	local top_suffix="%F{cyan}${top_right_corner}%f"
+	local bottom_suffix="%F{cyan}${bottom_right_corner}%f"
 	# use %{ .. %} for bottom_right_corner to remove useless space after RPROMPT
-	local bottom_suffix="%F{cyan}%{${bottom_right_corner}%}%f"
+	# remove useless space after RPROMPT
+	if [[ $TERM != "tmux-256color" ]]; then
+		# use %{ .. %} for bottom_right_corner if not in tmux
+		bottom_suffix="%{${bottom_suffix}%}"
+	else
+		ZLE_RPROMPT_INDENT=0
+	fi
 
 	# combine them to create the prompt
 	local top_left=""