diff --git a/themes/base.theme.bash b/themes/base.theme.bash
index 7087662..948427a 100644
--- a/themes/base.theme.bash
+++ b/themes/base.theme.bash
@@ -24,6 +24,7 @@
   if [[ -d .git ]]; then SCM=$GIT
   elif [[ -n "$(git symbolic-ref HEAD 2> /dev/null)" ]]; then SCM=$GIT
   elif [[ -d .hg ]]; then SCM=$HG
+  elif [[ -n "$(hg root 2> /dev/null)" ]]; then SCM=$HG
   elif [[ -d .svn ]]; then SCM=$SVN
   else SCM='NONE'
   fi