diff --git a/configure.ac b/configure.ac
index 2d9d4f66b1..48ac4873b8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -349,6 +349,8 @@ AC_C_FLAG([-fno-omit-frame-pointer])
 AC_C_FLAG([-funwind-tables])
 AC_C_FLAG([-Wall])
 AC_C_FLAG([-Wextra])
+AC_C_FLAG([-Wformat-nonliteral])
+AC_C_FLAG([-Wformat-security])
 AC_C_FLAG([-Wstrict-prototypes])
 AC_C_FLAG([-Wmissing-prototypes])
 AC_C_FLAG([-Wmissing-declarations])