diff --git a/R/tm_g_distribution.R b/R/tm_g_distribution.R
index 1f8af955e..6b11cffd4 100644
--- a/R/tm_g_distribution.R
+++ b/R/tm_g_distribution.R
@@ -601,7 +601,12 @@ srv_distribution <- function(id,
           gamma = c("shape", "rate"),
           unif = c("min", "max")
         )
-        params_names <- map_distr_nams[[input$t_dist]] %||% names(params)
+
+        if (!is.null(input$t_dist) && input$t_dist %in% names(map_distr_nams)) {
+          params_names <- map_distr_nams[[input$t_dist]]
+        } else {
+          params_names <- names(params)
+        }
 
         updateNumericInput(
           inputId = "dist_param1",
diff --git a/man/srv_decorate_teal_data.Rd b/man/srv_decorate_teal_data.Rd
index 91977f9b9..b0ed7159c 100644
--- a/man/srv_decorate_teal_data.Rd
+++ b/man/srv_decorate_teal_data.Rd
@@ -12,7 +12,8 @@ ui_decorate_teal_data(id, decorators, ...)
 \arguments{
 \item{id}{(\code{character(1)}) \code{shiny} module instance id.}
 
-\item{data}{(\code{reactive} returning \code{teal_data})}
+\item{data}{(\code{teal_data}, \code{teal_data_module}, or \code{reactive} returning \code{teal_data})
+The data which application will depend on.}
 
 \item{expr}{(\code{expression} or \code{reactive}) to evaluate on the output of the decoration.
 When an expression it must be inline code. See \code{\link[=within]{within()}}