diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_paper_frag.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_paper_frag.glsl
index 3c1424f98ff..1d1cd6349dc 100644
--- a/source/blender/draw/engines/gpencil/shaders/gpencil_paper_frag.glsl
+++ b/source/blender/draw/engines/gpencil/shaders/gpencil_paper_frag.glsl
@@ -5,5 +5,5 @@ out vec4 FragColor;
 
 void main()
 {
-  FragColor = vec4(color, opacity);
+  FragColor = vec4(color, 1.0 - opacity);
 }