diff --git a/themes/rjorgenson/rjorgenson.theme.sh b/themes/rjorgenson/rjorgenson.theme.sh
index 279c554..654c3fe 100644
--- a/themes/rjorgenson/rjorgenson.theme.sh
+++ b/themes/rjorgenson/rjorgenson.theme.sh
@@ -3,8 +3,8 @@
 
 # set colors for use throughout the prompt
 # i like things consistent
-OMB_THEME_BRACKET_COLOR="${OMB_THEME_BRACKET_COLOR:-${blue}}"
-OMB_THEME_STRING_COLOR="${OMB_THEME_STRING_COLOR:-${green}}"
+OMB_THEME_BRACKET_COLOR="${OMB_THEME_BRACKET_COLOR-${blue}}"
+OMB_THEME_STRING_COLOR="${OMB_THEME_STRING_COLOR-${green}}"
 
 SCM_THEME_PROMPT_PREFIX=""
 SCM_THEME_PROMPT_SUFFIX=""