diff --git a/Makefile.am b/Makefile.am
index e850abce..5e5576e9 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -11,6 +11,8 @@ AM_CPPFLAGS =					\
 
 AM_CFLAGS = $(GCC_CFLAGS)
 
+AM_DISTCHECK_CONFIGURE_FLAGS = --enable-fatal-warnings
+
 aclocaldir = $(datadir)/aclocal
 dist_aclocal_DATA = wayland-scanner.m4