--- a/Makefile	Sun Apr 05 15:29:54 2009 +0200
+++ b/Makefile	Sun Apr 05 16:11:11 2009 +0200
@@ -72,10 +72,10 @@
 $(PREFIX)/installed-$(1): $(TOP_DIR)/src/$(1).mk $(addprefix $(PREFIX)/installed-,$($(1)_DEPS))
 	[ -d '$(PREFIX)' ] || mkdir -p '$(PREFIX)'
 	[ -d '$(PKG_DIR)' ] || mkdir -p '$(PKG_DIR)'
-	$(if $$(shell $(call CHECK_PKG_ARCHIVE,$(1)) || echo 'error'),
-	    $(call DOWNLOAD_PKG_ARCHIVE,$(1))
-	    $(call CHECK_PKG_ARCHIVE,$(1))
-	    ,)
+	if ! $(call CHECK_PKG_ARCHIVE,$(1)); then \
+	    $(call DOWNLOAD_PKG_ARCHIVE,$(1)); \
+	    $(call CHECK_PKG_ARCHIVE,$(1)) || { echo 'Wrong checksum!'; exit 1; }; \
+	    fi
 	$(if $(value $(1)_BUILD),
 	    rm -rf   '$(2)'
 	    mkdir -p '$(2)'