diff --git a/op_island_align_world.py b/op_island_align_world.py
index b9047f6..d98744f 100644
--- a/op_island_align_world.py
+++ b/op_island_align_world.py
@@ -198,6 +198,10 @@ def align_island(obj, bm, uv_layers, faces, x=0, y=1, flip_x=False, flip_y=False
 						avg_angle+=a_delta
 
 	avg_angle /= n_edges
+
+	# For some reason, bpy.ops.transform.rotate rotates in the opposite direction in Blender 2.83 compared to other versions.
+	if float(bpy.app.version_string[0:4]) == 2.83:
+		avg_angle = -avg_angle
 	
 	print("Edges {}x".format(n_edges))
 	print("Turn {:.1f}".format(avg_angle * 180/math.pi))
@@ -208,7 +212,7 @@ def align_island(obj, bm, uv_layers, faces, x=0, y=1, flip_x=False, flip_y=False
 			loop[uv_layers].select = True
 
 	bpy.context.tool_settings.transform_pivot_point = 'MEDIAN_POINT'
-	bpy.ops.transform.rotate(value=-avg_angle, orient_axis='Z')  # minus angle; Blender uses unconventional rotation notation (positive for clockwise)
+	bpy.ops.transform.rotate(value=-avg_angle, orient_axis='Z', constraint_axis=(False, False, False), orient_type='GLOBAL', mirror=False, use_proportional_edit=False)
 
 
 def align_island_simple(obj, bm, uv_layers, faces, x=0, y=1, flip_x=False, flip_y=False):
@@ -257,6 +261,10 @@ def align_island_simple(obj, bm, uv_layers, faces, x=0, y=1, flip_x=False, flip_
 		a1 = math.atan2(delta_uvs.y, delta_uvs.x)
 		
 		a_delta = math.atan2(math.sin(a0-a1), math.cos(a0-a1))
+
+		# For some reason, bpy.ops.transform.rotate rotates in the opposite direction in Blender 2.83 compared to other versions.
+		if float(bpy.app.version_string[0:4]) == 2.83:
+			a_delta = -a_delta
 	
 	print("Turn {:.1f}".format(a_delta * 180/math.pi))
 
@@ -266,7 +274,7 @@ def align_island_simple(obj, bm, uv_layers, faces, x=0, y=1, flip_x=False, flip_
 			loop[uv_layers].select = True
 	
 	bpy.context.tool_settings.transform_pivot_point = 'MEDIAN_POINT'
-	bpy.ops.transform.rotate(value=-a_delta, orient_axis='Z')  # minus angle; Blender uses unconventional rotation notation (positive for clockwise)
+	bpy.ops.transform.rotate(value=-a_delta, orient_axis='Z', constraint_axis=(False, False, False), orient_type='GLOBAL', mirror=False, use_proportional_edit=False)
 
 
 bpy.utils.register_class(op)