diff --git a/pkg/ccn-lite/Makefile b/pkg/ccn-lite/Makefile
index 27e6d73d4b6a09cf098c76bc51541aadb417200b..320eb21242a14624ef1ec35d38ecea9b5d5e5561 100644
--- a/pkg/ccn-lite/Makefile
+++ b/pkg/ccn-lite/Makefile
@@ -11,12 +11,12 @@ TOOLCHAIN_FILE=$(PKG_BUILDDIR)/xcompile-toolchain.cmake
 
 all: $(PKG_BUILDDIR)/src/Makefile
 	$(MAKE) -C $(PKG_BUILDDIR)/src && \
-	cp $(PKG_BUILDDIR)/src/lib/libccnl-riot.a ${BINDIR}/ccn-lite.a
+	cp $(PKG_BUILDDIR)/src/lib/libccnl-riot.a $(BINDIR)/ccn-lite.a
 
 $(PKG_BUILDDIR)/src/Makefile: $(TOOLCHAIN_FILE)
 	cd $(PKG_BUILDDIR)/src && \
 	cmake -DCMAKE_TOOLCHAIN_FILE=$(TOOLCHAIN_FILE) \
-		  -DCCNL_RIOT=1 -DRIOT_CFLAGS="${RIOT_CFLAGS}" -DBUILD_TESTING=OFF .
+		  -DCCNL_RIOT=1 -DRIOT_CFLAGS="$(RIOT_CFLAGS)" -DBUILD_TESTING=OFF .
 
 $(TOOLCHAIN_FILE): git-download
 	$(RIOTBASE)/dist/tools/cmake/generate-xcompile-toolchain.sh > $(TOOLCHAIN_FILE)