diff --git a/leenkx/Shaders/histogram_pass/histogram_pass.frag.glsl b/leenkx/Shaders/histogram_pass/histogram_pass.frag.glsl
index f36a929..756f218 100644
--- a/leenkx/Shaders/histogram_pass/histogram_pass.frag.glsl
+++ b/leenkx/Shaders/histogram_pass/histogram_pass.frag.glsl
@@ -2,13 +2,22 @@
 
 #include "compiled.inc"
 
+#ifdef _CPostprocess
+uniform vec3 PPComp8;
+#endif
+
 uniform sampler2D tex;
 
 in vec2 texCoord;
 out vec4 fragColor;
 
 void main() {
-	fragColor.a = 0.01 * autoExposureSpeed;
+	#ifdef _CPostprocess
+		fragColor.a = 0.01 * PPComp8.z;
+	#else
+		fragColor.a = 0.01 * autoExposureSpeed;
+	#endif
+
 	fragColor.rgb = textureLod(tex, vec2(0.5, 0.5), 0.0).rgb +
 					textureLod(tex, vec2(0.2, 0.2), 0.0).rgb +
 					textureLod(tex, vec2(0.8, 0.2), 0.0).rgb +