diff --git a/app/tools/gimpdrawtool.c b/app/tools/gimpdrawtool.c
index c4ab08afda..2512248df1 100644
--- a/app/tools/gimpdrawtool.c
+++ b/app/tools/gimpdrawtool.c
@@ -371,34 +371,6 @@ gimp_draw_tool_calc_distance_square (GimpDrawTool *draw_tool,
   return SQR (tx2 - tx1) + SQR (ty2 - ty1);
 }
 
-/**
- * gimp_draw_tool_in_radius:
- * @draw_tool: a #GimpDrawTool
- * @display:   a #GimpDisplay
- * @x1:        start point X in image coordinates
- * @y1:        start point Y in image coordinates
- * @x2:        end point X in image coordinates
- * @y2:        end point Y in image coordinates
- * @radius:    distance in screen coordinates, not image coordinates
- *
- * The points are in image space coordinates.
- *
- * Returns: %TRUE if the points are within radius of each other,
- *          %FALSE otherwise
- **/
-gboolean
-gimp_draw_tool_in_radius (GimpDrawTool *draw_tool,
-                          GimpDisplay  *display,
-                          gdouble       x1,
-                          gdouble       y1,
-                          gdouble       x2,
-                          gdouble       y2,
-                          gint          radius)
-{
-  return (gimp_draw_tool_calc_distance_square (draw_tool, display,
-                                               x1, y1, x2, y2) < SQR (radius));
-}
-
 /**
  * gimp_draw_tool_draw_line:
  * @draw_tool:   the #GimpDrawTool
diff --git a/app/tools/gimpdrawtool.h b/app/tools/gimpdrawtool.h
index 4a473c4b1a..37d3e40f4f 100644
--- a/app/tools/gimpdrawtool.h
+++ b/app/tools/gimpdrawtool.h
@@ -81,13 +81,6 @@ gdouble          gimp_draw_tool_calc_distance_square (GimpDrawTool     *draw_too
                                                       gdouble           y1,
                                                       gdouble           x2,
                                                       gdouble           y2);
-gboolean         gimp_draw_tool_in_radius            (GimpDrawTool     *draw_tool,
-                                                      GimpDisplay      *display,
-                                                      gdouble           x1,
-                                                      gdouble           y1,
-                                                      gdouble           x2,
-                                                      gdouble           y2,
-                                                      gint              radius);
 
 GimpCanvasItem * gimp_draw_tool_draw_line            (GimpDrawTool     *draw_tool,
                                                       gdouble           x1,
diff --git a/app/tools/gimpiscissorstool.c b/app/tools/gimpiscissorstool.c
index ab61f4bbce..078a60bd56 100644
--- a/app/tools/gimpiscissorstool.c
+++ b/app/tools/gimpiscissorstool.c
@@ -1299,11 +1299,10 @@ mouse_over_curve (GimpIscissorsTool *iscissors,
           ty = coords >> 16;
 
           /*  Is the specified point close enough to the curve?  */
-          if (gimp_draw_tool_in_radius (GIMP_DRAW_TOOL (iscissors),
-                                        GIMP_TOOL (iscissors)->display,
-                                        tx, ty,
-                                        x, y,
-                                        POINT_WIDTH / 2))
+          if (gimp_draw_tool_calc_distance_square (GIMP_DRAW_TOOL (iscissors),
+                                                   GIMP_TOOL (iscissors)->display,
+                                                   tx, ty,
+                                                   x, y) < SQR (POINT_WIDTH / 2))
             {
               return list;
             }