diff --git a/src/pki_gcrypt.c b/src/pki_gcrypt.c
index 3e43aa4a..61883341 100644
--- a/src/pki_gcrypt.c
+++ b/src/pki_gcrypt.c
@@ -27,6 +27,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <gcrypt.h>
+#include <stdio.h>
 
 #include "libssh/priv.h"
 #include "libssh/buffer.h"