diff --git a/library/ctr_drbg.c b/library/ctr_drbg.c
index 6962d68b9..386f8adb0 100644
--- a/library/ctr_drbg.c
+++ b/library/ctr_drbg.c
@@ -67,8 +67,8 @@ void mbedtls_ctr_drbg_init( mbedtls_ctr_drbg_context *ctx )
 }
 
 /*
- * Non-public function wrapped by mbedtls_ctr_drbg_init(). Necessary to allow NIST
- * tests to succeed (which require known length fixed entropy)
+ * Non-public function wrapped by mbedtls_ctr_drbg_seed(). Necessary to allow
+ * NIST tests to succeed (which require known length fixed entropy)
  */
 int mbedtls_ctr_drbg_seed_entropy_len(
                    mbedtls_ctr_drbg_context *ctx,