diff --git a/artio-core/src/test/java/uk/co/real_logic/artio/engine/framer/FramerTest.java b/artio-core/src/test/java/uk/co/real_logic/artio/engine/framer/FramerTest.java
index 103539100d..a2086409f5 100644
--- a/artio-core/src/test/java/uk/co/real_logic/artio/engine/framer/FramerTest.java
+++ b/artio-core/src/test/java/uk/co/real_logic/artio/engine/framer/FramerTest.java
@@ -117,7 +117,6 @@ public class FramerTest
     private final InternalSession session = mock(InternalSession.class);
     private final Subscription outboundLibrarySubscription = mock(Subscription.class);
     private final Image replayImage = mock(Image.class);
-    private final Image peekImage = mock(Image.class);
     private final Image normalImage = mock(Image.class);
     private final CompositeKey sessionKey = SessionIdStrategy
         .senderAndTarget()