diff --git a/fuzz/driver.c b/fuzz/driver.c
index 21bbb255af..928e0e1491 100644
--- a/fuzz/driver.c
+++ b/fuzz/driver.c
@@ -15,6 +15,9 @@
 
 #ifndef OPENSSL_NO_FUZZ_LIBFUZZER
 
+int LLVMFuzzerInitialize(int *argc, char ***argv);
+int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len);
+
 int LLVMFuzzerInitialize(int *argc, char ***argv)
 {
     return FuzzerInitialize(argc, argv);