diff --git a/src/test/unittests/synergy/CCryptoStreamTests.cpp b/src/test/unittests/synergy/CCryptoStreamTests.cpp
index 83b98161..94470f7a 100644
--- a/src/test/unittests/synergy/CCryptoStreamTests.cpp
+++ b/src/test/unittests/synergy/CCryptoStreamTests.cpp
@@ -220,6 +220,7 @@ TEST(CCryptoTests, readWriteIvChanged)
 	// ensure that the new IV is used.
 	byte iv[CRYPTO_IV_SIZE];
 	cs1.newIv(iv);
+	cs1.setIv(iv);
 	cs2.setIv(iv);
 
 	cs1.write(bufferIn, 4);