diff --git a/DESCRIPTION b/DESCRIPTION
index 2e5e4a9..6ff8f7f 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: efun
 Title: Miscellaneous Functions by E
-Version: 0.3.3
+Version: 0.3.4
 Authors@R: 
     person(given = "Eduardo",
            family = "Alfonso-Sierra",
diff --git a/R/assert.R b/R/assert.R
index d33c683..5339728 100644
--- a/R/assert.R
+++ b/R/assert.R
@@ -21,7 +21,9 @@
 #' @param .data A data frame containing the variables used in the conditions.
 #' @param ... One or more expressions to be evaluated within the data frame.
 #' @param msg A character vector specifying the message to include in the error
-#'   message if the assertion fails.
+#'            message if the assertion fails.
+#' @param na.rm passed to `all()`: logical. If true NA values are removed
+#'              before the result is computed.
 #'
 #' @return The data frame `.data` if all conditions are met. Otherwise, an error
 #'   is thrown.
diff --git a/man/assert.Rd b/man/assert.Rd
index a86f6b0..ddc6bb3 100644
--- a/man/assert.Rd
+++ b/man/assert.Rd
@@ -4,7 +4,7 @@
 \alias{assert}
 \title{Assert a condition within a data frame}
 \usage{
-assert(.data, ..., msg = "Assertion does not hold")
+assert(.data, ..., msg = "Assertion does not hold", na.rm = TRUE)
 }
 \arguments{
 \item{.data}{A data frame containing the variables used in the conditions.}
@@ -13,6 +13,9 @@ assert(.data, ..., msg = "Assertion does not hold")
 
 \item{msg}{A character vector specifying the message to include in the error
 message if the assertion fails.}
+
+\item{na.rm}{passed to \code{all()}: logical. If true NA values are removed
+before the result is computed.}
 }
 \value{
 The data frame \code{.data} if all conditions are met. Otherwise, an error