diff --git a/configure.ac b/configure.ac
index 601ccf0a7..700f4ab70 100644
--- a/configure.ac
+++ b/configure.ac
@@ -656,6 +656,9 @@ if test "x$use_ccache" != "xno"; then
   fi
   AC_MSG_RESULT($use_ccache)
 fi
+if test "x$use_ccache" = "xyes"; then
+    AX_CHECK_PREPROC_FLAG([-Qunused-arguments],[CPPFLAGS="-Qunused-arguments $CPPFLAGS"])
+fi
 
 dnl enable wallet
 AC_MSG_CHECKING([if wallet should be enabled])