diff --git a/crypto/drbg.c b/crypto/drbg.c
index fb33f7d3b052f5bb016342c1da2ef61b9f74ad8e..9a95b619e19a85e854dc6d6781f596388e89ffd0 100644
--- a/crypto/drbg.c
+++ b/crypto/drbg.c
@@ -1766,6 +1766,7 @@ static int drbg_kcapi_sym_ctr(struct drbg_state *drbg,
 		init_completion(&drbg->ctr_completion);
 
 		outlen -= cryptlen;
+		outbuf += cryptlen;
 	}
 
 	return 0;