diff --git a/test/utest.cpp b/test/utest.cpp
index 97d2ea4..40f7ea8 100644
--- a/test/utest.cpp
+++ b/test/utest.cpp
@@ -226,6 +226,15 @@
         command(opensslCmd + pkeyFile + " -out " + pubkeyFile + ".sig " +
                 pubkeyFile);
 
+#ifdef WANT_SIGNATURE_FULL_VERIFY
+        std::string fullFile = extractPath.string() + "/" + "image-full";
+        command("cat " + kernelFile + ".sig " + rofsFile + ".sig " + rwfsFile +
+                ".sig " + ubootFile + ".sig " + manifestFile + ".sig " +
+                pubkeyFile + ".sig > " + fullFile);
+        command(opensslCmd + pkeyFile + " -out " + fullFile + ".sig " +
+                fullFile);
+#endif
+
         signature = std::make_unique<Signature>(extractPath, signedConfPath);
     }
     virtual void TearDown()