diff --git a/DESCRIPTION b/DESCRIPTION
index 2e8d352..ba8f7c3 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: microbiomeDASim
 Type: Package
 Title: Microbiome Differential Abundance Simulation 
-Version: 1.1.4
+Version: 1.1.5
 Author: Justin Williams, Hector Corrada Bravo, Jennifer Tom, Joseph Nathaniel Paulson
 Maintainer: Justin Williams <williazo@ucla.edu>
 Description: A toolkit for simulating differential microbiome data designed for
diff --git a/R/sim_obs_functions.R b/R/sim_obs_functions.R
index b44150e..3cbdf9b 100644
--- a/R/sim_obs_functions.R
+++ b/R/sim_obs_functions.R
@@ -162,6 +162,9 @@ mvrnorm_sim_obs <- function(id, time, group, ref, control_mean, sigma, rho,
 #' for each respective id
 #' @param ref character value identifying which group value to treat as control
 #' and which value to treat as treatment
+#' @param control_mean numeric value specifying the mean value for control
+#' subjects. all control subjects are assummed to have the same population mean
+#'  value.
 #' @param sigma numeric value specifying the global population standard
 #'  deviation for both control and treated individuals.
 #' @param rho value for the correlation parameter. must be between \[0, 1\].
diff --git a/man/gen_norm_microbiome_obs.Rd b/man/gen_norm_microbiome_obs.Rd
index d4e0b5a..9571c59 100644
--- a/man/gen_norm_microbiome_obs.Rd
+++ b/man/gen_norm_microbiome_obs.Rd
@@ -43,6 +43,10 @@ for each respective id}
 \item{ref}{character value identifying which group value to treat as control
 and which value to treat as treatment}
 
+\item{control_mean}{numeric value specifying the mean value for control
+subjects. all control subjects are assummed to have the same population mean
+value.}
+
 \item{sigma}{numeric value specifying the global population standard
 deviation for both control and treated individuals.}