diff --git a/oh-my-zsh.sh b/oh-my-zsh.sh
index 198982b05..ba00f13e4 100644
--- a/oh-my-zsh.sh
+++ b/oh-my-zsh.sh
@@ -232,7 +232,7 @@ if [[ -n "$ZSH_THEME" ]]; then
     source "$ZSH/themes/$ZSH_THEME.zsh-theme"
   else
     echo "[oh-my-zsh] Theme '$ZSH_THEME' was not found, using default theme!"
-    if is_default_theme "$ZSH_CUSTOM" && ! is_theme "$ZSH_THEME" "robbyrussell"; then
+    if is_default_theme "$ZSH_CUSTOM" && ! is_theme "$ZSH/themes/" "robbyrussell"; then
       if is_theme "$ZSH_CUSTOM/themes/" "robbyrussell"; then
         source "$ZSH_CUSTOM/themes/robbyrussell.zsh-theme"
       else