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-rw-r--r--src/ruby/lib/grpc/generic/client_stub.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/ruby/lib/grpc/generic/client_stub.rb b/src/ruby/lib/grpc/generic/client_stub.rb
index 32da7a2b0f..98e83a8396 100644
--- a/src/ruby/lib/grpc/generic/client_stub.rb
+++ b/src/ruby/lib/grpc/generic/client_stub.rb
@@ -464,7 +464,7 @@ module GRPC
method,
nil, # host use nil,
deadline)
- call.set_credentials credentials unless credentials.nil?
+ call.set_credentials! credentials unless credentials.nil?
ActiveCall.new(call, @queue, marshal, unmarshal, deadline, started: false)
end
end