diff --git a/SequenceAnalysis/src/org/labkey/sequenceanalysis/pipeline/SequenceJobSupportImpl.java b/SequenceAnalysis/src/org/labkey/sequenceanalysis/pipeline/SequenceJobSupportImpl.java
index 23e3e68a4..d7eb2ea8c 100644
--- a/SequenceAnalysis/src/org/labkey/sequenceanalysis/pipeline/SequenceJobSupportImpl.java
+++ b/SequenceAnalysis/src/org/labkey/sequenceanalysis/pipeline/SequenceJobSupportImpl.java
@@ -203,7 +203,7 @@ public void cacheGenome(ReferenceGenome m)
 
         if (getCachedGenome(key) != null)
         {
-            _cachedGenomes.remove(getCachedGenome(key));
+            _cachedGenomes.remove(key);
         }
 
         _cachedGenomes.put(key, m);