diff --git a/crypto/hkdf/hkdf.c b/crypto/hkdf/hkdf.c
index bb7f5a4..f9cdcb0 100644
--- a/crypto/hkdf/hkdf.c
+++ b/crypto/hkdf/hkdf.c
@@ -40,7 +40,7 @@
   /* Expand key material to desired length. */
   n = (out_len + digest_len - 1) / digest_len;
   if (out_len + digest_len < out_len || n > 255) {
-    OPENSSL_PUT_ERROR(HKDF, HKDF, HKDF_R_OUTPUT_TOO_LARGE);
+    OPENSSL_PUT_ERROR(HKDF, HKDF_R_OUTPUT_TOO_LARGE);
     return 0;
   }
 
@@ -83,7 +83,7 @@
 out:
   HMAC_CTX_cleanup(&hmac);
   if (ret != 1) {
-    OPENSSL_PUT_ERROR(HKDF, HKDF, ERR_R_HMAC_LIB);
+    OPENSSL_PUT_ERROR(HKDF, ERR_R_HMAC_LIB);
   }
   return ret;
 }