diff --git a/makefile b/makefile
index db8d2852..24786e4a 100644
--- a/makefile
+++ b/makefile
@@ -257,6 +257,7 @@ ifeq (${WIN32},)  #*nix Environments (&& cygwin)
         endif
       endif
     else
+      OS_CCDEFS += -Werror
       ifeq (,$(findstring ++,${GCC}))
         CC_STD = -std=gnu99
       else
@@ -264,6 +265,7 @@ ifeq (${WIN32},)  #*nix Environments (&& cygwin)
       endif
     endif
   else
+    OS_CCDEFS += -Werror
     ifeq (Apple,$(shell ${GCC} -v /dev/null 2>&1 | grep 'Apple' | awk '{ print $$1 }'))
       COMPILER_NAME = $(shell ${GCC} -v /dev/null 2>&1 | grep 'Apple' | awk '{ print $$1 " " $$2 " " $$3 " " $$4 }')
       CLANG_VERSION = $(word 4,$(COMPILER_NAME))