diff --git a/examples/pres_2/bob.c b/examples/pres_2/bob.c
index 32028b18c7e015b5c88aaf4515282e0971405f48..f5da91926e15f62bd6e0f0733bf89a97d313526b 100644
--- a/examples/pres_2/bob.c
+++ b/examples/pres_2/bob.c
@@ -34,7 +34,7 @@ int main(int argc, char** argv) {
 	// Read our received message
 	size_t msg_len;
 	const char * msg_ptr = connector_gotten_bytes(c, ports[2], &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);
@@ -42,4 +42,4 @@ int main(int argc, char** argv) {
 	free(pdl);
 	sleep(1.0);
 	return 0;
-}
\ No newline at end of file
+}