diff --git a/NAMESPACE b/NAMESPACE
index 04601ec..4029e30 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -45,7 +45,6 @@ export(st_geohash)
 export(st_is_polygon_cw)
 export(st_linesubstring)
 export(st_minimum_bounding_circle)
-export(st_perimeter)
 export(st_perimeter_2d)
 export(st_perimeter_lwgeom)
 export(st_snap_to_grid)
diff --git a/man/perimeter.Rd b/man/perimeter.Rd
index f276a1c..a1aacea 100644
--- a/man/perimeter.Rd
+++ b/man/perimeter.Rd
@@ -3,14 +3,11 @@
 \name{perimeter}
 \alias{perimeter}
 \alias{st_perimeter_lwgeom}
-\alias{st_perimeter}
 \alias{st_perimeter_2d}
-\title{compute perimeter from polygons or other geometries}
+\title{Compute perimeter from polygons or other geometries}
 \usage{
 st_perimeter_lwgeom(x)
 
-st_perimeter(x)
-
 st_perimeter_2d(x)
 }
 \arguments{
@@ -20,5 +17,5 @@ st_perimeter_2d(x)
 numerical vector with perimeter for each feature (geometry), with unit of measure when possible
 }
 \description{
-compute perimeter from polygons or other geometries
+Compute perimeter from polygons or other geometries
 }
diff --git a/man/st_astext.Rd b/man/st_astext.Rd
index 0b04ad0..7a10fb9 100644
--- a/man/st_astext.Rd
+++ b/man/st_astext.Rd
@@ -5,7 +5,7 @@
 \alias{st_asewkt}
 \title{Return Well-known Text representation of simple feature geometry}
 \usage{
-st_astext(x, digits = options("digits"), ..., EWKT = FALSE)
+st_astext(x, digits = getOption("digits"), ..., EWKT = FALSE)
 
 st_asewkt(x, digits = options("digits"))
 }