diff --git a/lib/rex/proto/smb/exceptions.rb b/lib/rex/proto/smb/exceptions.rb
index 4c180e4356..503df400e2 100644
--- a/lib/rex/proto/smb/exceptions.rb
+++ b/lib/rex/proto/smb/exceptions.rb
@@ -835,11 +835,11 @@ end
 
 class LoginError < SimpleClientError
 	def to_s
-		"Login Failed: " + self.source
+		"Login Failed: " + self.source.to_s
 	end
 end
 
 end
 end
 end
-end
\ No newline at end of file
+end