diff --git a/tests/data_files/Makefile b/tests/data_files/Makefile
index 3c7fd41b3..40cbcbe4d 100644
--- a/tests/data_files/Makefile
+++ b/tests/data_files/Makefile
@@ -68,7 +68,7 @@ test_ca_key_file_ec = test-ca2.key
 test-int-ca.csr: test-int-ca.key $(test_ca_config_file)
 	$(OPENSSL) req -new -config $(test_ca_config_file) -key test-int-ca.key -subj "/C=NL/O=PolarSSL/CN=PolarSSL Test Intermediate CA" -out $@
 all_intermediate += test-int-ca.csr
-test-int-ca-exp.crt: $(test_ca_key_file_ec) $(test_ca_config_file) test-int-ca.csr
+test-int-ca-exp.crt: $(test_ca_crt_file_ec) $(test_ca_key_file_ec) $(test_ca_config_file) test-int-ca.csr
 	$(FAKETIME) -f -3653d $(OPENSSL) x509 -req -extfile $(test_ca_config_file) -extensions v3_ca -CA $(test_ca_crt_file_ec) -CAkey $(test_ca_key_file_ec) -set_serial 14 -days 3653 -sha256 -in test-int-ca.csr -out $@
 all_final += test-int-ca-exp.crt