diff --git a/Library/Homebrew/keg_relocate.rb b/Library/Homebrew/keg_relocate.rb
index fd24c41916..6058996e77 100644
--- a/Library/Homebrew/keg_relocate.rb
+++ b/Library/Homebrew/keg_relocate.rb
@@ -130,7 +130,7 @@ class Keg
   end
 
   def openjdk_dep_name_if_applicable
-    runtime_dependencies.find do |dep|
+    runtime_dependencies&.find do |dep|
       dep["full_name"].match? Version.formula_optionally_versioned_regex(:openjdk)
     end&.fetch("full_name")
   end