diff --git a/themes/base.theme.bash b/themes/base.theme.bash
index 5e31d7ca..7452eb9f 100644
--- a/themes/base.theme.bash
+++ b/themes/base.theme.bash
@@ -68,6 +68,8 @@ NVM_THEME_PROMPT_SUFFIX='|'
 RVM_THEME_PROMPT_PREFIX=' |'
 RVM_THEME_PROMPT_SUFFIX='|'
 
+THEME_SHOW_RUBY_PROMPT=${THEME_SHOW_RUBY_PROMPT:=true}
+
 THEME_SHOW_USER_HOST=${THEME_SHOW_USER_HOST:=false}
 USER_HOST_THEME_PROMPT_PREFIX=''
 USER_HOST_THEME_PROMPT_SUFFIX=''
@@ -371,7 +373,7 @@ function chruby_version_prompt {
 }
 
 function ruby_version_prompt {
-  if [ -z "${RUBY_VERSION_PROMPT_DISABLED}" ]; then
+  if [[ "${THEME_SHOW_RUBY_PROMPT}" = "true" ]]; then
     echo -e "$(rbfu_version_prompt)$(rbenv_version_prompt)$(rvm_version_prompt)$(chruby_version_prompt)"
   fi
 }