diff --git a/documentation/source/3dgraphics/glscatterplotitem.rst b/documentation/source/3dgraphics/glscatterplotitem.rst
new file mode 100644
index 00000000..4fa337c6
--- /dev/null
+++ b/documentation/source/3dgraphics/glscatterplotitem.rst
@@ -0,0 +1,8 @@
+GLScatterPlotItem
+=================
+
+.. autoclass:: pyqtgraph.opengl.GLScatterPlotItem
+    :members:
+
+    .. automethod:: pyqtgraph.opengl.GLScatterPlotItem.__init__
+
diff --git a/documentation/source/3dgraphics/index.rst b/documentation/source/3dgraphics/index.rst
index ec0807d4..d569db09 100644
--- a/documentation/source/3dgraphics/index.rst
+++ b/documentation/source/3dgraphics/index.rst
@@ -21,5 +21,6 @@ Contents:
     glimageitem
     glaxisitem
     glgraphicsitem
+    glscatterplotitem
     meshdata
 
diff --git a/opengl/items/GLScatterPlotItem.py b/opengl/items/GLScatterPlotItem.py
index 56c81fe9..765a807d 100644
--- a/opengl/items/GLScatterPlotItem.py
+++ b/opengl/items/GLScatterPlotItem.py
@@ -23,7 +23,7 @@ class GLScatterPlotItem(GLGraphicsItem):
         ------------------------------------------------------------------------
         pos                   (x,y,z) tuple of coordinate values or QVector3D
         color                 (r,g,b,a) tuple of floats (0.0-1.0) or QColor
-        size                  (float) diameter of spot in pixels
+        size                  (float) diameter of spot
         ====================  ==================================================
         """