diff --git a/Sources/arm/render/Uniforms.hx b/Sources/arm/render/Uniforms.hx
index e1076fbe..53fdf3dd 100644
--- a/Sources/arm/render/Uniforms.hx
+++ b/Sources/arm/render/Uniforms.hx
@@ -159,7 +159,7 @@ class Uniforms {
 				if (Config.raw.pressure_angle && pen.down()) {
 					angle *= pen.pressure * Config.raw.pressure_sensitivity;
 				}
-				vec.set(Math.cos(angle), Math.sin(angle), 0);
+				vec.set(Math.cos(-angle), Math.sin(-angle), 0);
 				return vec;
 			}
 			case "_texpaintSize": {
diff --git a/Sources/arm/ui/UISidebar.hx b/Sources/arm/ui/UISidebar.hx
index ff52efd5..89077f47 100644
--- a/Sources/arm/ui/UISidebar.hx
+++ b/Sources/arm/ui/UISidebar.hx
@@ -878,7 +878,7 @@ class UISidebar {
 
 						g.color = kha.Color.fromFloats(1, 1, 1, decalAlpha);
 						var angle = (Context.brushAngle + Context.brushNodesAngle) * (Math.PI / 180);
-						g.pushRotation(-angle, decalX + psizex / 2, decalY + psizey / 2);
+						g.pushRotation(angle, decalX + psizex / 2, decalY + psizey / 2);
 						#if (kha_direct3d11 || kha_direct3d12 || kha_metal || kha_vulkan)
 						g.drawScaledImage(Context.decalImage, decalX, decalY, psizex, psizey);
 						#else