diff --git a/playground/java/src/org/broadinstitute/sting/utils/FastaSequenceFile2.java b/core/java/src/org/broadinstitute/sting/utils/FastaSequenceFile2.java
similarity index 100%
rename from playground/java/src/org/broadinstitute/sting/utils/FastaSequenceFile2.java
rename to core/java/src/org/broadinstitute/sting/utils/FastaSequenceFile2.java