diff --git a/docs/examples/usercertinmem.c b/docs/examples/usercertinmem.c
index 03dd148276..29cc754c14 100644
--- a/docs/examples/usercertinmem.c
+++ b/docs/examples/usercertinmem.c
@@ -108,7 +108,7 @@ static CURLcode sslctx_function(CURL *curl, void *sslctx, void *pointer)
     printf("BIO_new_mem_buf failed\n");
   }
 
-  pkey = PEM_read_bio_PrivateKey(bio, NULL, NULL, NULL);
+  pkey = PEM_read_bio_PrivateKey(kbio, NULL, NULL, NULL);
   if(!pkey) {
     printf("Failed EVP_PKEY_new()\n");
   }