diff --git a/src/main/java/picard/util/IlluminaUtil.java b/src/main/java/picard/util/IlluminaUtil.java
index 03732aff9..93696bb22 100644
--- a/src/main/java/picard/util/IlluminaUtil.java
+++ b/src/main/java/picard/util/IlluminaUtil.java
@@ -144,7 +144,7 @@ public static byte getSolexaQualityCharFromFourQualities(final String[] qualitie
         NEXTERA_V2(            "AATGATACGGCGACCACCGAGATCTACACNNNNNNNNTCGTCGGCAGCGTCAGATGTGTATAAGAGACAG",
                     "CTGTCTCTTATACACATCTCCGAGCCCACGAGACNNNNNNNNATCTCGTATGCCGTCTTCTGCTTG"),
 
-        DUAL_INDEXED(          "AATGATACGGCGACCACCGAGATCTNNNNNNNNACACTCTTTCCCTACACGACGCTCTTCCGATCT",
+        DUAL_INDEXED(          "AATGATACGGCGACCACCGAGATCTACACNNNNNNNNACACTCTTTCCCTACACGACGCTCTTCCGATCT",
                     "AGATCGGAAGAGCACACGTCTGAACTCCAGTCACNNNNNNNNATCTCGTATGCCGTCTTCTGCTTG"),
 
         FLUIDIGM(              "AATGATACGGCGACCACCGAGATCTACACTGACGACATGGTTCTACA",