diff --git a/examples/pres_1/bob.c b/examples/pres_1/bob.c
index e1b2cb279fadb91b6cdeaef69acd5bbc1686b10e..c421e0cc1d9f1929c9e5d5cc632790c23a2586ab 100644
--- a/examples/pres_1/bob.c
+++ b/examples/pres_1/bob.c
@@ -31,11 +31,11 @@ int main(int argc, char** argv) {
 	// Read our received message
 	size_t msg_len;
 	const char * msg_ptr = connector_gotten_bytes(c, p0, &msg_len);
-	printf("Got msg `%.*s`\n", msg_len, msg_ptr);
+	printf("Got msg `%.*s`\n", (int) msg_len, msg_ptr);
 	
 	printf("Exiting\n");
 	protocol_description_destroy(pd);
 	connector_destroy(c);
 	sleep(1.0);
 	return 0;
-}
\ No newline at end of file
+}