diff --git a/crypto/thread_pthread.c b/crypto/thread_pthread.c
index 68aaab5..2a1c9f8 100644
--- a/crypto/thread_pthread.c
+++ b/crypto/thread_pthread.c
@@ -17,7 +17,6 @@
 #if !defined(OPENSSL_WINDOWS) && !defined(OPENSSL_NO_THREADS)
 
 #include <pthread.h>
-#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ -76,8 +75,6 @@
 
 void CRYPTO_once(CRYPTO_once_t *once, void (*init)(void)) {
   if (pthread_once(once, init) != 0) {
-    fprintf(stderr,
-            "pthread_once failed. Did you link against a threading library?\n");
     abort();
   }
 }