diff --git a/source/blender/editors/include/UI_interface.h b/source/blender/editors/include/UI_interface.h
index 191c34fc7f2..9f542b9c66c 100644
--- a/source/blender/editors/include/UI_interface.h
+++ b/source/blender/editors/include/UI_interface.h
@@ -316,6 +316,8 @@ typedef enum {
  * Functions to draw various shapes, taking theme settings into account.
  * Used for code that draws its own UI style elements. */
 
+void UI_draw_anti_tria(float x1, float y1, float x2, float y2, float x3, float y3, const float color[4]);
+
 void UI_draw_roundbox_corner_set(int type);
 void UI_draw_roundbox_aa(bool filled, float minx, float miny, float maxx, float maxy, float rad, const float color[4]);
 void UI_draw_roundbox_4fv(bool filled, float minx, float miny, float maxx, float maxy, float rad, const float col[4]);
diff --git a/source/blender/editors/interface/interface_intern.h b/source/blender/editors/interface/interface_intern.h
index b9e680f009a..cc2dbd31b57 100644
--- a/source/blender/editors/interface/interface_intern.h
+++ b/source/blender/editors/interface/interface_intern.h
@@ -725,7 +725,6 @@ struct Gwn_Batch *ui_batch_roundbox_get(bool filled, bool antialiased);
 struct Gwn_Batch *ui_batch_roundbox_widget_get(int tria);
 struct Gwn_Batch *ui_batch_roundbox_shadow_get(void);
 
-void ui_draw_anti_tria(float x1, float y1, float x2, float y2, float x3, float y3, const float color[4]);
 void ui_draw_anti_roundbox(int mode, float minx, float miny, float maxx, float maxy,
                            float rad, bool use_alpha, const float color[4]);
 void ui_draw_menu_back(struct uiStyle *style, uiBlock *block, rcti *rect);
diff --git a/source/blender/editors/interface/interface_panel.c b/source/blender/editors/interface/interface_panel.c
index bb086d63917..aa10efe45cb 100644
--- a/source/blender/editors/interface/interface_panel.c
+++ b/source/blender/editors/interface/interface_panel.c
@@ -400,13 +400,13 @@ void UI_draw_icon_tri(float x, float y, char dir, const float color[4])
 	float f7 = 0.35 * U.widget_unit;
 	
 	if (dir == 'h') {
-		ui_draw_anti_tria(x - f3, y - f5, x - f3, y + f5, x + f7, y, color);
+		UI_draw_anti_tria(x - f3, y - f5, x - f3, y + f5, x + f7, y, color);
 	}
 	else if (dir == 't') {
-		ui_draw_anti_tria(x - f5, y - f7, x + f5, y - f7, x, y + f3, color);
+		UI_draw_anti_tria(x - f5, y - f7, x + f5, y - f7, x, y + f3, color);
 	}
 	else { /* 'v' = vertical, down */
-		ui_draw_anti_tria(x - f5, y + f3, x + f5, y + f3, x, y - f7, color);
+		UI_draw_anti_tria(x - f5, y + f3, x + f5, y + f3, x, y - f7, color);
 	}
 }
 
@@ -419,11 +419,11 @@ static void ui_draw_tria_rect(const rctf *rect, char dir)
 
 	if (dir == 'h') {
 		float half = 0.5f * BLI_rctf_size_y(rect);
-		ui_draw_anti_tria(rect->xmin, rect->ymin, rect->xmin, rect->ymax, rect->xmax, rect->ymin + half, color);
+		UI_draw_anti_tria(rect->xmin, rect->ymin, rect->xmin, rect->ymax, rect->xmax, rect->ymin + half, color);
 	}
 	else {
 		float half = 0.5f * BLI_rctf_size_x(rect);
-		ui_draw_anti_tria(rect->xmin, rect->ymax, rect->xmax, rect->ymax, rect->xmin + half, rect->ymin, color);
+		UI_draw_anti_tria(rect->xmin, rect->ymax, rect->xmax, rect->ymax, rect->xmin + half, rect->ymin, color);
 	}
 }
 
diff --git a/source/blender/editors/interface/interface_widgets.c b/source/blender/editors/interface/interface_widgets.c
index 4bfd99c66ab..3b29b63707f 100644
--- a/source/blender/editors/interface/interface_widgets.c
+++ b/source/blender/editors/interface/interface_widgets.c
@@ -494,7 +494,7 @@ Gwn_Batch *ui_batch_roundbox_shadow_get(void)
 
 /* ************************************************* */
 
-void ui_draw_anti_tria(float x1, float y1, float x2, float y2, float x3, float y3,
+void UI_draw_anti_tria(float x1, float y1, float x2, float y2, float x3, float y3,
                        const float color[4])
 {
 	float tri_arr[3][2] = {{x1, y1}, {x2, y2}, {x3, y3}};
diff --git a/source/blender/editors/screen/area.c b/source/blender/editors/screen/area.c
index 98ec654b420..994dfc8ba8a 100644
--- a/source/blender/editors/screen/area.c
+++ b/source/blender/editors/screen/area.c
@@ -75,8 +75,6 @@
 
 #include "screen_intern.h"
 
-extern void ui_draw_anti_tria(float x1, float y1, float x2, float y2, float x3, float y3, const float color[4]); /* xxx temp */
-
 enum RegionEmbossSide {
 	REGION_EMBOSS_LEFT   = (1 << 0),
 	REGION_EMBOSS_TOP    = (1 << 1),
@@ -443,19 +441,19 @@ static void region_draw_azone_tria(AZone *az)
 	/* add code to draw region hidden as 'too small' */
 	switch (az->edge) {
 		case AE_TOP_TO_BOTTOMRIGHT:
-			ui_draw_anti_tria((float)az->x1, (float)az->y1, (float)az->x2, (float)az->y1, (float)(az->x1 + az->x2) / 2, (float)az->y2, color);
+			UI_draw_anti_tria((float)az->x1, (float)az->y1, (float)az->x2, (float)az->y1, (float)(az->x1 + az->x2) / 2, (float)az->y2, color);
 			break;
 			
 		case AE_BOTTOM_TO_TOPLEFT:
-			ui_draw_anti_tria((float)az->x1, (float)az->y2, (float)az->x2, (float)az->y2, (float)(az->x1 + az->x2) / 2, (float)az->y1, color);
+			UI_draw_anti_tria((float)az->x1, (float)az->y2, (float)az->x2, (float)az->y2, (float)(az->x1 + az->x2) / 2, (float)az->y1, color);
 			break;
 
 		case AE_LEFT_TO_TOPRIGHT:
-			ui_draw_anti_tria((float)az->x2, (float)az->y1, (float)az->x2, (float)az->y2, (float)az->x1, (float)(az->y1 + az->y2) / 2, color);
+			UI_draw_anti_tria((float)az->x2, (float)az->y1, (float)az->x2, (float)az->y2, (float)az->x1, (float)(az->y1 + az->y2) / 2, color);
 			break;
 			
 		case AE_RIGHT_TO_TOPLEFT:
-			ui_draw_anti_tria((float)az->x1, (float)az->y1, (float)az->x1, (float)az->y2, (float)az->x2, (float)(az->y1 + az->y2) / 2, color);
+			UI_draw_anti_tria((float)az->x1, (float)az->y1, (float)az->x1, (float)az->y2, (float)az->x2, (float)(az->y1 + az->y2) / 2, color);
 			break;
 			
 	}