diff --git a/NEWS.md b/NEWS.md
index b1570e2..73a32bf 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -2,6 +2,7 @@
 
 ## UNDERLYING CHANGES
 * Fixed issue with denominator in ```getCirclize()```
+* Fixing chain issue with clonalCompare() - expanded assertthat statement
 
 # scRepertoire VERSION 2.2.1
 
diff --git a/R/clonalCompare.R b/R/clonalCompare.R
index a4c21ab..3a556e0 100644
--- a/R/clonalCompare.R
+++ b/R/clonalCompare.R
@@ -70,7 +70,7 @@ clonalCompare <- function(input.data,
     isListOfNonEmptyDataFrames(input.data) ||
       is_seurat_or_se_object(input.data),
     is.string(cloneCall),
-    is.string(chain), chain %in% c("both", "TRA", "TRG", "IGH", "IGL"),
+    is.string(chain), chain %in% c("both", "TRA", "TRB", "TRG", "TRD", "IGH", "IGL"),
     is.null(samples) || is.character(samples),
     is.null(clones) || is.character(clones),
     is.null(top.clones) || is.count(top.clones),