diff --git a/NEWS.md b/NEWS.md
index 6888146..fcde125 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,6 +1,7 @@
 # logitnorm 0.8.37
 
 - Density returns 0 instead of NAN outside (0,1)
+- Changed first argument name of dlogitnorm from q to x
 
 # logitnorm 0.8.36
 Remove the library call to MASS.
diff --git a/R/logitnorm.R b/R/logitnorm.R
index 92fd7d7..2c194be 100755
--- a/R/logitnorm.R
+++ b/R/logitnorm.R
@@ -39,7 +39,7 @@ rlogitnorm <- function(
 
 plogitnorm <- function(
   ### Distribution function for logitnormal distribution	
-  q
+  q  ##<< vector of quantiles
   , mu = 0, sigma = 1	##<< distribution parameters
   , ...
 ){
@@ -51,7 +51,7 @@ plogitnorm <- function(
 
 dlogitnorm <- function(
   ### Density function of logitnormal distribution	
-  q		##<< quantiles
+  x		##<< vector of quantiles
   , mu = 0, sigma = 1	##<< distribution parameters
   , log = FALSE    ##<< if TRUE, the log-density is returned
   , ...	##<< further arguments passed to \code{\link{dnorm}}: \code{mean}, 
@@ -68,25 +68,25 @@ dlogitnorm <- function(
   ##seealso<< \code{\link{logitnorm}}
   ##details<< The function is only defined in interval (0,1), but the density 
   ## returns 0 outside the support region.
-  ql <- qlogis(q)
+  ql <- qlogis(x)
   # multiply (or add in the log domain) by the Jacobian (derivative) of the
   # back-Transformation (logit)
   if (log) {
     ifelse(
-      q <= 0 | q >= 1, 0, 
-      dnorm(ql, mean = mu, sd = sigma, log = TRUE, ...) - log(q) - log1p(-q)
+      x <= 0 | x >= 1, 0, 
+      dnorm(ql, mean = mu, sd = sigma, log = TRUE, ...) - log(x) - log1p(-x)
     )
   } else {
     ifelse(
-      q <= 0 | q >= 1, 0, 
-      dnorm(ql,mean = mu,sd = sigma,...)/q/(1 - q)
+      x <= 0 | x >= 1, 0, 
+      dnorm(ql,mean = mu,sd = sigma,...)/x/(1 - x)
     )
   }
 }
 
 qlogitnorm <- function(
   ### Quantiles of logitnormal distribution.	
-  p
+  p ##<< vector of probabilities
   , mu = 0, sigma = 1	##<< distribution parameters
   , ...
 ){
diff --git a/man/dlogitnorm.Rd b/man/dlogitnorm.Rd
index 573950d..d948a97 100755
--- a/man/dlogitnorm.Rd
+++ b/man/dlogitnorm.Rd
@@ -2,10 +2,10 @@
 \alias{dlogitnorm}
 \title{dlogitnorm}
 \description{Density function of logitnormal distribution	}
-\usage{dlogitnorm(q, mu = 0, sigma = 1, log = FALSE, 
+\usage{dlogitnorm(x, mu = 0, sigma = 1, log = FALSE, 
     ...)}
 \arguments{
-  \item{q}{quantiles}
+  \item{x}{vector of quantiles}
   \item{mu}{distribution parameters}
   \item{sigma}{
 }
diff --git a/man/plogitnorm.Rd b/man/plogitnorm.Rd
index 228d0fd..c2aa959 100755
--- a/man/plogitnorm.Rd
+++ b/man/plogitnorm.Rd
@@ -4,8 +4,7 @@
 \description{Distribution function for logitnormal distribution	}
 \usage{plogitnorm(q, mu = 0, sigma = 1, ...)}
 \arguments{
-  \item{q}{
-}
+  \item{q}{vector of quantiles}
   \item{mu}{distribution parameters}
   \item{sigma}{
 }
diff --git a/man/qlogitnorm.Rd b/man/qlogitnorm.Rd
index 04c93f9..8712bcb 100755
--- a/man/qlogitnorm.Rd
+++ b/man/qlogitnorm.Rd
@@ -4,8 +4,7 @@
 \description{Quantiles of logitnormal distribution.	}
 \usage{qlogitnorm(p, mu = 0, sigma = 1, ...)}
 \arguments{
-  \item{p}{
-}
+  \item{p}{vector of probabilities}
   \item{mu}{distribution parameters}
   \item{sigma}{
 }