diff --git a/themes/base.theme.bash b/themes/base.theme.bash
index 56629b9d..70876622 100644
--- a/themes/base.theme.bash
+++ b/themes/base.theme.bash
@@ -22,6 +22,7 @@ RVM_THEME_PROMPT_SUFFIX='|'
 
 function scm {
   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 [[ -d .svn ]]; then SCM=$SVN
   else SCM='NONE'