diff --git a/resources/function_help/json/main_angle b/resources/function_help/json/main_angle
index 7dbf923e4aa..9339d709396 100644
--- a/resources/function_help/json/main_angle
+++ b/resources/function_help/json/main_angle
@@ -2,7 +2,7 @@
   "name": "main_angle",
   "type": "function",
   "groups": ["GeometryGroup"],
-  "description":"Returns the main angle of a geometry (clockwise, in degrees from North), which represents the angle of the oriented minimal bounding rectangle which completely covers the geometry.",
+  "description":"Returns the angle of the long axis (clockwise, in degrees from North) of the oriented minimal bounding rectangle, which completely covers the geometry.",
   "arguments": [ {"arg":"geometry","description":"a geometry"} ],
   "examples": [ { "expression":"main_angle(geom_from_wkt('Polygon ((321577 129614, 321581 129618, 321585 129615, 321581 129610, 321577 129614))'))", "returns":"38.66"}]
 }
diff --git a/src/core/geometry/qgsinternalgeometryengine.h b/src/core/geometry/qgsinternalgeometryengine.h
index 293b53bbea2..5c77da73a64 100644
--- a/src/core/geometry/qgsinternalgeometryengine.h
+++ b/src/core/geometry/qgsinternalgeometryengine.h
@@ -199,7 +199,7 @@ class QgsInternalGeometryEngine
     /**
      * Returns the oriented minimum bounding box for the geometry, which is the smallest (by area)
      * rotated rectangle which fully encompasses the geometry.
-     * The area, angle of the longest axis (clockwise in degrees from North),
+     * The area, angle of the long axis (clockwise in degrees from North),
      * width and height of the rotated bounding box will also be returned.
      *
      * If an error was encountered while creating the result, more information can be retrieved