diff --git a/ub-example.c b/ub-example.c
index 4c48d31..996cf3a 100644
--- a/ub-example.c
+++ b/ub-example.c
@@ -214,7 +214,7 @@
 
 #define INPUT "xyz123xyz"
 
-int32_t RunUsefulBufExample()
+int32_t RunUsefulBufExample(void)
 {
    /* ------------ UsefulBuf examples ------------- */
    UsefulBufC Input = UsefulBuf_FROM_SZ_LITERAL(INPUT);