diff --git a/bin/brew b/bin/brew
index 9406a5d374..c9640a3091 100755
--- a/bin/brew
+++ b/bin/brew
@@ -39,7 +39,7 @@ then
 fi
 
 # Try to find a /usr/local HOMEBREW_PREFIX where possible (for bottles)
-if [[ -L "/usr/local/bin/brew" ]]
+if [[ -L "/usr/local/bin/brew" && ! -L "$HOMEBREW_PREFIX/Cellar" ]]
 then
   USR_LOCAL_BREW_FILE_DIRECTORY="$(symlink_target_directory "/usr/local/bin/brew" "/usr/local/bin")"
   USR_LOCAL_HOMEBREW_REPOSITORY="${USR_LOCAL_BREW_FILE_DIRECTORY%/*}"