diff --git a/ydb/public/sdk/cpp/client/iam/common/iam.h b/ydb/public/sdk/cpp/client/iam/common/iam.h
index d52412309375..337d40522c02 100644
--- a/ydb/public/sdk/cpp/client/iam/common/iam.h
+++ b/ydb/public/sdk/cpp/client/iam/common/iam.h
@@ -168,7 +168,7 @@ class TGrpcIamCredentialsProvider : public ICredentialsProvider {
 
                     RequestInflight_ = false;
                     sleepDuration = std::min(BackoffTimeout_, BACKOFF_MAX);
-                    BackoffTimeout_ *= 2;
+                    BackoffTimeout_ = std::min(BackoffTimeout_ * 2, BACKOFF_MAX);
                 }
 
                 Sleep(sleepDuration);
diff --git a/ydb/public/sdk/cpp/src/client/iam/common/iam.h b/ydb/public/sdk/cpp/src/client/iam/common/iam.h
index 6020a7624c1e..244d18426830 100644
--- a/ydb/public/sdk/cpp/src/client/iam/common/iam.h
+++ b/ydb/public/sdk/cpp/src/client/iam/common/iam.h
@@ -126,7 +126,7 @@ class TGrpcIamCredentialsProvider : public ICredentialsProvider {
 
                     RequestInflight_ = false;
                     sleepDuration = std::min(BackoffTimeout_, BACKOFF_MAX);
-                    BackoffTimeout_ *= 2;
+                    BackoffTimeout_ = std::min(BackoffTimeout_ * 2, BACKOFF_MAX);
                 }
 
                 Sleep(sleepDuration);