diff --git a/pkg/tinycrypt/Makefile b/pkg/tinycrypt/Makefile
index 4889b1e382..a85b1d2e40 100644
--- a/pkg/tinycrypt/Makefile
+++ b/pkg/tinycrypt/Makefile
@@ -5,5 +5,5 @@ PKG_LICENSE=BSD-3-Clause
 
 include $(RIOTBASE)/pkg/pkg.mk
 
-all:
-	$(QQ)"$(MAKE)" -C $(PKG_SOURCE_DIR)/lib/source/ -f $(RIOTBASE)/Makefile.base MODULE=$(PKG_NAME)
+all: Makefile.tinycrypt
+	$(QQ)"$(MAKE)" -C $(PKG_SOURCE_DIR)/lib/source/ -f $(CURDIR)/Makefile.tinycrypt -f $(RIOTBASE)/Makefile.base MODULE=$(PKG_NAME)
diff --git a/pkg/tinycrypt/Makefile.tinycrypt b/pkg/tinycrypt/Makefile.tinycrypt
new file mode 100644
index 0000000000..ded7429150
--- /dev/null
+++ b/pkg/tinycrypt/Makefile.tinycrypt
@@ -0,0 +1 @@
+SRC = $(filter-out ecc_platform_specific.c,$(wildcard *.c))