diff --git a/lib/scm.zsh b/lib/scm.zsh
index 58f8e12df..accea9b53 100644
--- a/lib/scm.zsh
+++ b/lib/scm.zsh
@@ -27,6 +27,7 @@ function _scm_get_scm_type {
 function _scm_reset {
   unset SCM_ROOT
   unset SCM_TYPE
+  unset SCM_PROMPT_INFO
 }
 
 # Recursive lookup for possible SCM root
diff --git a/plugins/scm/scm.plugin.zsh b/plugins/scm/scm.plugin.zsh
index c236e74a2..d24a8681e 100644
--- a/plugins/scm/scm.plugin.zsh
+++ b/plugins/scm/scm.plugin.zsh
@@ -1,3 +1,5 @@
 declare -a chpwd_functions
+declare -a precmd_functions
 chpwd_functions+='scm_detect_root'
-
+precmd_functions+='scm_build_prompt_info'
+