diff --git a/configure.ac b/configure.ac
index 3c6759335..b96dd1565 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1031,7 +1031,7 @@ AC_HELP_STRING([--disable-debug],[Disable debug options]),
     CPPFLAGS="$CPPFLAGS -DCURLDEBUG"
     CFLAGS="$CFLAGS -g" 
     if test "$GCC" = "yes"; then
-       CFLAGS="$CFLAGS -W -Wall -Wwrite-strings -pedantic -Wno-long-long -Wundef -Wpointer-arith -Wnested-externs"
+       CFLAGS="$CFLAGS -W -Wall -Wwrite-strings -pedantic -Wno-long-long -Wno-format-nonliteral -Wundef -Wpointer-arith -Wnested-externs"
 
        dnl here's a more aggressive set to use:
        dnl CFLAGS="$CFLAGS -W -Wall -Wwrite-strings -pedantic -Wno-long-long -Wundef -Wpointer-arith -Wnested-externs -Wcast-align -Winline -Wstrict-prototypes -Wmissing-declarations -Wmissing-prototypes -Wshadow -Wfloat-equal -Wsign-compare -Wunreachable-code"