diff --git a/testsuite/sha1-huge-test.c b/testsuite/sha1-huge-test.c
new file mode 100644
index 0000000000000000000000000000000000000000..4f1b4dcee16c718fece854ada0fa88f8254bc03c
--- /dev/null
+++ b/testsuite/sha1-huge-test.c
@@ -0,0 +1,15 @@
+#include "testutils.h"
+#include "sha.h"
+
+int
+test_main(void)
+{
+  /* Hashes 10 000 000 x 30 000 bytes > 64 * 2^32. This overflows the
+     low word of the block counter. This test vector is not cross
+     checked with any other sha1 implementation. */
+  test_hash_large(&nettle_sha1, 10000000, 30000, 'a',
+		  H("0ba79364dc64648f 2074fb4bc5c28bcf"
+		    "b7a787b0"));
+
+  SUCCESS();
+}