diff --git a/spectator-ext-sandbox/src/main/java/com/netflix/spectator/sandbox/DoubleDistributionSummary.java b/spectator-ext-sandbox/src/main/java/com/netflix/spectator/sandbox/DoubleDistributionSummary.java
index 5a03abb24..f92f3f07e 100644
--- a/spectator-ext-sandbox/src/main/java/com/netflix/spectator/sandbox/DoubleDistributionSummary.java
+++ b/spectator-ext-sandbox/src/main/java/com/netflix/spectator/sandbox/DoubleDistributionSummary.java
@@ -17,7 +17,6 @@
 
 
 import com.netflix.spectator.api.Clock;
-import com.netflix.spectator.api.ExtendedRegistry;
 import com.netflix.spectator.api.Id;
 import com.netflix.spectator.api.Measurement;
 import com.netflix.spectator.api.Meter;