diff --git a/libs/gtkmm2ext/gtkmm2ext/utils.h b/libs/gtkmm2ext/gtkmm2ext/utils.h
index 95d5abc3e3..a036b517bb 100644
--- a/libs/gtkmm2ext/gtkmm2ext/utils.h
+++ b/libs/gtkmm2ext/gtkmm2ext/utils.h
@@ -122,6 +122,8 @@ namespace Gtkmm2ext {
 	LIBGTKMM2EXT_API void rounded_top_rectangle (Cairo::RefPtr<Cairo::Context> context, double x, double y, double w, double h, double r=10);
 	LIBGTKMM2EXT_API void rounded_top_left_rectangle (Cairo::RefPtr<Cairo::Context> context, double x, double y, double w, double h, double r=10);
 	LIBGTKMM2EXT_API void rounded_top_right_rectangle (Cairo::RefPtr<Cairo::Context> context, double x, double y, double w, double h, double r=10);
+	LIBGTKMM2EXT_API void rounded_bottom_left_rectangle (Cairo::RefPtr<Cairo::Context> context, double x, double y, double w, double h, double r=10);
+	LIBGTKMM2EXT_API void rounded_bottom_right_rectangle (Cairo::RefPtr<Cairo::Context> context, double x, double y, double w, double h, double r=10);
 	LIBGTKMM2EXT_API void rounded_top_half_rectangle (Cairo::RefPtr<Cairo::Context>, double x, double y, double w, double h, double r=10);
 	LIBGTKMM2EXT_API void rounded_bottom_half_rectangle (Cairo::RefPtr<Cairo::Context>, double x, double y, double w, double h, double r=10);
 	LIBGTKMM2EXT_API void rounded_right_half_rectangle (Cairo::RefPtr<Cairo::Context>, double x, double y, double w, double h, double r=10);
@@ -134,6 +136,8 @@ namespace Gtkmm2ext {
 	LIBGTKMM2EXT_API void rounded_top_rectangle (cairo_t*, double x, double y, double w, double h, double r=10);
 	LIBGTKMM2EXT_API void rounded_top_left_rectangle (cairo_t*, double x, double y, double w, double h, double r=10);
 	LIBGTKMM2EXT_API void rounded_top_right_rectangle (cairo_t*, double x, double y, double w, double h, double r=10);
+	LIBGTKMM2EXT_API void rounded_bottom_left_rectangle (cairo_t*, double x, double y, double w, double h, double r=10);
+	LIBGTKMM2EXT_API void rounded_bottom_right_rectangle (cairo_t*, double x, double y, double w, double h, double r=10);
 	LIBGTKMM2EXT_API void rounded_top_half_rectangle (cairo_t*, double x, double y, double w, double h, double r=10);
 	LIBGTKMM2EXT_API void rounded_bottom_half_rectangle (cairo_t*, double x, double y, double w, double h, double r=10);
 	LIBGTKMM2EXT_API void rounded_right_half_rectangle (cairo_t*, double x, double y, double w, double h, double r=10);
diff --git a/libs/gtkmm2ext/utils.cc b/libs/gtkmm2ext/utils.cc
index 2f92b67464..0b65b1727e 100644
--- a/libs/gtkmm2ext/utils.cc
+++ b/libs/gtkmm2ext/utils.cc
@@ -615,6 +615,16 @@ Gtkmm2ext::rounded_top_right_rectangle (Cairo::RefPtr<Cairo::Context> context, d
 	rounded_top_right_rectangle (context->cobj(), x, y, w, h, r);
 }
 void
+Gtkmm2ext::rounded_bottom_left_rectangle (Cairo::RefPtr<Cairo::Context> context, double x, double y, double w, double h, double r)
+{
+	rounded_bottom_left_rectangle (context->cobj(), x, y, w, h, r);
+}
+void
+Gtkmm2ext::rounded_bottom_right_rectangle (Cairo::RefPtr<Cairo::Context> context, double x, double y, double w, double h, double r)
+{
+	rounded_bottom_right_rectangle (context->cobj(), x, y, w, h, r);
+}
+void
 Gtkmm2ext::rounded_top_half_rectangle (Cairo::RefPtr<Cairo::Context> context, double x, double y, double w, double h, double r)
 {
 	rounded_top_half_rectangle (context->cobj(), x, y, w, h, r);
@@ -746,7 +756,7 @@ Gtkmm2ext::rounded_top_left_rectangle (cairo_t* cr, double x, double y, double w
 void
 Gtkmm2ext::rounded_top_right_rectangle (cairo_t* cr, double x, double y, double w, double h, double r)
 {
-/*    A****BQ
+/*    A***BX
       *    C
       *    *
       *    *
@@ -754,12 +764,46 @@ Gtkmm2ext::rounded_top_right_rectangle (cairo_t* cr, double x, double y, double
 */
 	cairo_move_to (cr, x,y); // Move to A
 	cairo_line_to (cr, x+w-r,y); // Straight line to B
-	cairo_curve_to (cr, x+w,y,x+w,y,x+w,y+r); // Curve to C, Control points are both at Q
+	cairo_curve_to (cr, x+w,y,x+w,y,x+w,y+r); // Curve to C, Control points are both at X
 	cairo_line_to (cr, x+w,y+h); // Move to E
 	cairo_line_to (cr, x,y+h); // Line to F
 	cairo_line_to (cr, x,y); // Line to A
 }
 
+void
+Gtkmm2ext::rounded_bottom_left_rectangle (cairo_t* cr, double x, double y, double w, double h, double r)
+{
+/*    A****B
+      *    *
+      *    *
+      G    *
+       F***E
+*/
+	cairo_move_to (cr, x,y); // Move to A
+	cairo_line_to (cr, x+w,y); // Straight line to B
+	cairo_line_to (cr, x+w,y+h); // Move to E
+	cairo_line_to (cr, x+r,y+h); // Line to F
+	cairo_curve_to (cr, x,y+h, x,y+h, x,y+h-r); // Curve to G
+	cairo_line_to (cr, x,y+r); // Line to A
+}
+
+void
+Gtkmm2ext::rounded_bottom_right_rectangle (cairo_t* cr, double x, double y, double w, double h, double r)
+{
+/*    A****B
+      *    *
+      *    *
+      *    C
+      E***DX
+*/
+	cairo_move_to (cr, x,y); // Move to A
+	cairo_line_to (cr, x+w,y); // Straight line to B
+	cairo_line_to (cr, x+w,y+h-r); // to C
+	cairo_curve_to (cr, x+w,y+h, x+w,y+h, x+w-r,y+h); // Curve to D, control points at X
+	cairo_line_to (cr, x,y+h); // Line to E
+	cairo_line_to (cr, x,y); // Line to A
+}
+
 void
 Gtkmm2ext::add_reflection (cairo_t* cr, double w, double h)
 {