diff --git a/R/component.adj.matrix.R b/R/component.adj.matrix.R
index 43834d8..6580d64 100644
--- a/R/component.adj.matrix.R
+++ b/R/component.adj.matrix.R
@@ -25,7 +25,7 @@
 #' @keywords manip
 #'
 #' @examples
-#' if (requireNamespace("igraph")) {
+#' if (requireNamespace("igraph") && requireNamespace("vegan")) {
 #'   # load sample data set
 #'   data(amador)
 #' 
diff --git a/man/component.adj.matrix.Rd b/man/component.adj.matrix.Rd
index 55dc0c5..e3c8672 100644
--- a/man/component.adj.matrix.Rd
+++ b/man/component.adj.matrix.Rd
@@ -45,7 +45,7 @@ a similarity matrix / adjacency matrix suitable for use with \code{igraph} funct
 Create an adjacency matrix from SSURGO component data
 }
 \examples{
-if (requireNamespace("igraph")) {
+if (requireNamespace("igraph") && requireNamespace("vegan")) {
   # load sample data set
   data(amador)