diff --git a/DESCRIPTION b/DESCRIPTION
index e9051b5..976a576 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -29,7 +29,7 @@ Suggests:
     knitr,
     rmarkdown,
     harpIO (>= 0.2.2.9014),
-    harpVis (>= 0.2.2.9011)
+    harpVis (>= 0.2.2.9011),
     ggplot2,
     ncdf4
 VignetteBuilder: knitr