diff --git a/man/KorAPConnection-class.Rd b/man/KorAPConnection.Rd
similarity index 93%
rename from man/KorAPConnection-class.Rd
rename to man/KorAPConnection.Rd
index fd306a4..018573f 100644
--- a/man/KorAPConnection-class.Rd
+++ b/man/KorAPConnection.Rd
@@ -5,6 +5,21 @@
 \alias{KorAPConnection-class}
 \alias{KorAPConnection}
 \title{Connect to KorAP Server}
+\usage{
+KorAPConnection(
+  KorAPUrl = defaultKorAPUrl(),
+  apiVersion = "v1.0",
+  apiUrl,
+  accessToken = getAccessToken(KorAPUrl),
+  oauthClient = NULL,
+  oauthScope = "search match_info",
+  authorizationSupported = TRUE,
+  userAgent = "R-KorAP-Client",
+  timeout = 240,
+  verbose = FALSE,
+  cache = TRUE
+)
+}
 \arguments{
 \item{KorAPUrl}{URL of the web user interface of the KorAP server instance you want to access.
 Defaults to the environment variable \code{KORAP_URL} if set and to the IDS Mannheim KorAP main instance
diff --git a/man/defaultKorAPUrl.Rd b/man/defaultKorAPUrl.Rd
new file mode 100644
index 0000000..5da4915
--- /dev/null
+++ b/man/defaultKorAPUrl.Rd
@@ -0,0 +1,17 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/KorAPConnection.R
+\name{defaultKorAPUrl}
+\alias{defaultKorAPUrl}
+\title{Default KorAP server URL}
+\usage{
+defaultKorAPUrl()
+}
+\value{
+URL of the KorAP instance to connect to by default
+}
+\description{
+Returns the KorAP instance URL to connect to if none is given explicitly:
+the environment variable \code{KORAP_URL} if it is set and non-empty, and the
+IDS Mannheim KorAP main instance otherwise.
+}
+\keyword{internal}
diff --git a/man/initialize-KorAPConnection-method.Rd b/man/initialize-KorAPConnection-method.Rd
index 35a92a0..8399c3f 100644
--- a/man/initialize-KorAPConnection-method.Rd
+++ b/man/initialize-KorAPConnection-method.Rd
@@ -6,12 +6,7 @@
 \usage{
 \S4method{initialize}{KorAPConnection}(
   .Object,
-  KorAPUrl = if (is.null(Sys.getenv("KORAP_URL")) | Sys.getenv("KORAP_URL") == "") {
-    
-    "https://korap.ids-mannheim.de/"
- } else {
-     Sys.getenv("KORAP_URL")
- },
+  KorAPUrl = defaultKorAPUrl(),
   apiVersion = "v1.0",
   apiUrl,
   accessToken = getAccessToken(KorAPUrl),