diff --git a/library/Makefile b/library/Makefile
index 624773dc19..b1cdc7f0ea 100644
--- a/library/Makefile
+++ b/library/Makefile
@@ -199,6 +199,7 @@ all: shared static
 endif
 
 static: libmbedcrypto.a libmbedx509.a libmbedtls.a
+	cd ../tests && echo "This is a seedfile that contains 64 bytes (65 on Windows)......" > seedfile
 
 shared: libmbedcrypto.$(DLEXT) libmbedx509.$(DLEXT) libmbedtls.$(DLEXT)