diff --git a/activesupport/lib/active_support/inflector/methods.rb b/activesupport/lib/active_support/inflector/methods.rb
index 16ec34ad60ed3..adf8c15c49722 100644
--- a/activesupport/lib/active_support/inflector/methods.rb
+++ b/activesupport/lib/active_support/inflector/methods.rb
@@ -280,8 +280,8 @@ def constantize(camel_cased_word)
     def safe_constantize(camel_cased_word)
       constantize(camel_cased_word)
     rescue NameError => e
-      raise unless e.message =~ /(uninitialized constant|wrong constant name) #{const_regexp(camel_cased_word)}$/ ||
-        e.name.to_s == camel_cased_word.to_s
+      raise if e.name && !(camel_cased_word.to_s.split("::").include?(e.name.to_s) ||
+        e.name.to_s == camel_cased_word.to_s)
     rescue ArgumentError => e
       raise unless e.message =~ /not missing constant #{const_regexp(camel_cased_word)}\!$/
     end