diff --git a/fuzz/CMakeLists.txt b/fuzz/CMakeLists.txt
index c4ca883e..556514f7 100644
--- a/fuzz/CMakeLists.txt
+++ b/fuzz/CMakeLists.txt
@@ -1,5 +1,7 @@
 include_directories(../include)
 
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-missing-prototypes")
+
 add_executable(
   privkey