diff --git a/Library/Homebrew/extend/pathname.rb b/Library/Homebrew/extend/pathname.rb
index d54e7d72f9..0edd1bd06d 100644
--- a/Library/Homebrew/extend/pathname.rb
+++ b/Library/Homebrew/extend/pathname.rb
@@ -396,7 +396,7 @@ class Pathname
   # Returns an empty array both for software that links against no libraries,
   # and for non-mach objects.
   def dynamically_linked_libraries
-    `otool -L "#{expand_path}"`.chomp.split("\n")[1..-1].map do |line|
+    `#{MacOS.locate("otool")} -L "#{expand_path}"`.chomp.split("\n")[1..-1].map do |line|
       line[/\t(.+) \([^(]+\)/, 1]
     end
   end