diff --git a/tests/data_files/Makefile b/tests/data_files/Makefile
index 288b01f..dbe3234 100644
--- a/tests/data_files/Makefile
+++ b/tests/data_files/Makefile
@@ -1223,6 +1223,11 @@
 	echo -en '\x15' | dd of=$@ seek=973 bs=1 conv=notrunc
 all_final += pkcs7_signerInfo_serial_invalid_size.der
 
+# pkcs7 signature file just with signed data
+pkcs7_data_cert_signeddata_sha256.der: pkcs7_data_cert_signed_sha256.der
+	dd if=pkcs7_data_cert_signed_sha256.der of=$@ skip=19 bs=1
+all_final += pkcs7_data_cert_signeddata_sha256.der
+
 ################################################################
 #### Diffie-Hellman parameters
 ################################################################