diff --git a/src/Makefile b/src/Makefile
index 7d75c83d2..49335f0ec 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -31,7 +31,7 @@ ifneq (,$(findstring FreeBSD,$(uname_S)))
   STD+=-Wno-c11-extensions
 endif
 endif
-WARN=-Wall -W -Wno-missing-field-initializers
+WARN=-Wall -W -Wno-missing-field-initializers -Wno-strict-prototypes
 OPT=$(OPTIMIZATION)
 
 # Detect if the compiler supports C11 _Atomic.