diff --git a/include/crypto/internal/kpp.h b/include/crypto/internal/kpp.h
index 9cb0662ebe87..31ff3c1986ef 100644
--- a/include/crypto/internal/kpp.h
+++ b/include/crypto/internal/kpp.h
@@ -50,6 +50,12 @@ static inline void *kpp_request_ctx(struct kpp_request *req)
 	return req->__ctx;
 }
 
+static inline void kpp_set_reqsize(struct crypto_kpp *kpp,
+				   unsigned int reqsize)
+{
+	crypto_kpp_alg(kpp)->reqsize = reqsize;
+}
+
 static inline void *kpp_tfm_ctx(struct crypto_kpp *tfm)
 {
 	return tfm->base.__crt_ctx;