diff --git a/themes/simple/simple.theme.bash b/themes/simple/simple.theme.bash
index 39e16a1c..8b897ddc 100644
--- a/themes/simple/simple.theme.bash
+++ b/themes/simple/simple.theme.bash
@@ -11,11 +11,15 @@ case $TERM in
 	TITLEBAR=""
 	;;
 esac
-PROMPT="${TITLEBAR}${orange}${reset_color}${green}\w${bold_blue}\[\$(scm_prompt_info)\]${reset_color} "
 
+function prompt_command() {
+	PS1="${TITLEBAR}${orange}${reset_color}${green}\w${bold_blue}\[\$(scm_prompt_info)\]${reset_color} "
+}
 
 # scm themeing
 SCM_THEME_PROMPT_DIRTY=" ✗"
 SCM_THEME_PROMPT_CLEAN=" ✓"
 SCM_THEME_PROMPT_PREFIX="("
 SCM_THEME_PROMPT_SUFFIX=")"
+
+PROMPT_COMMAND=prompt_command;