diff --git a/debian/rules b/debian/rules
index 86f4452..a609775 100755
--- a/debian/rules
+++ b/debian/rules
@@ -11,7 +11,7 @@ DEB_HOST_GNU_TYPE=$(shell dpkg-architecture -qDEB_HOST_GNU_TYPE)
 DEB_BUILD_GNU_TYPE=$(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE)
 DEB_HOST_MULTIARCH=$(shell dpkg-architecture -qDEB_HOST_MULTIARCH)
 ifneq ($(DEB_HOST_GNU_TYPE),$(DEB_BUILD_GNU_TYPE))
-CROSS= --build $(DEB_BUILD_GNU_TYPE) --host $(DEB_HOST_GNU_TYPE) --cache-file=$(DEB_HOST_GNU_TYPE).cache
+CROSS= --build $(DEB_BUILD_GNU_TYPE) --host $(DEB_HOST_GNU_TYPE) --cache-file=$(DEB_HOST_GNU_TYPE).cache scanf_cv_type_modifier=as
 else
 CROSS=
 endif