diff --git a/configure.ac b/configure.ac
index 6ed438ace0..effdb3a87a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2685,7 +2685,7 @@ FRR version             : ${PACKAGE_VERSION}
 host operating system   : ${host_os}
 source code location    : ${srcdir}
 compiler                : ${CC}
-compiler flags          : ${CFLAGS} ${AC_CFLAGS} ${SAN_FLAGS}
+compiler flags          : ${CFLAGS} ${WERROR} ${AC_CFLAGS} ${SAN_FLAGS}
 make                    : ${MAKE-make}
 linker flags            : ${LDFLAGS} ${SAN_FLAGS} ${LIBS} ${LIBCAP} ${LIBREADLINE} ${LIBM}
 state file directory    : ${frr_statedir}