diff --git a/public/java/src/org/broadinstitute/sting/utils/sam/GATKSAMRecord.java b/public/java/src/org/broadinstitute/sting/utils/sam/GATKSAMRecord.java
index f17772f40..03b794ae3 100755
--- a/public/java/src/org/broadinstitute/sting/utils/sam/GATKSAMRecord.java
+++ b/public/java/src/org/broadinstitute/sting/utils/sam/GATKSAMRecord.java
@@ -45,7 +45,7 @@ import java.util.Map;
 public class GATKSAMRecord extends BAMRecord {
     // ReduceReads specific attribute tags
     public static final String REDUCED_READ_CONSENSUS_TAG = "RR";                   // marks a synthetic read produced by the ReduceReads tool
-    public static final String REDUCED_READ_ORIGINAL_ALIGNMENT_START_SHIFT = "OS";  // reads that are clipped may use this attribute to keep track of their original alignment start
+    public static final String REDUCED_READ_ORIGINAL_ALIGNMENT_START_SHIFT = "OP";  // reads that are clipped may use this attribute to keep track of their original alignment start
     public static final String REDUCED_READ_ORIGINAL_ALIGNMENT_END_SHIFT = "OE";    // reads that are clipped may use this attribute to keep track of their original alignment end
 
     // the SAMRecord data we're caching