diff --git a/DESCRIPTION b/DESCRIPTION
index 3729f219..f671c916 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -42,7 +42,8 @@ Suggests:
     scales,
     jsonlite,
     pheatmap,
-    duckdb
+    duckdb,
+    dbplyr
 Collate: 
     'aaa.R'
     'generics.R'
diff --git a/man/Plot2DGraphM.Rd b/man/Plot2DGraphM.Rd
index 20c6293b..c1a8ece9 100644
--- a/man/Plot2DGraphM.Rd
+++ b/man/Plot2DGraphM.Rd
@@ -68,7 +68,8 @@ A \code{patchwork} object
 \description{
 In contrast to \code{\link{Plot2DGraph}}, which only draw 1 marker at the time,
 this function makes it possible to arrange plots into a grid with markers in rows
-and components in columns.
+and components in columns. The color scales are fixed for each marker so that their
+limits are the same across all components.
 }
 \examples{
 library(pixelatorR)