diff --git a/src/libcamera/shaders/bayer_1x_packed.frag b/src/libcamera/shaders/bayer_1x_packed.frag
index 23747f78a..06ddc040b 100644
--- a/src/libcamera/shaders/bayer_1x_packed.frag
+++ b/src/libcamera/shaders/bayer_1x_packed.frag
@@ -225,7 +225,7 @@ void main(void)
 			vec3(patterns.y, C, patterns.x) :
 			vec3(patterns.wz, C));
 
-	rgb = rgb - blacklevel;
+	rgb = (rgb - blacklevel) / (1.0 - blacklevel);
 
 	/*
 	 *   CCM is a 3x3 in the format
diff --git a/src/libcamera/shaders/bayer_unpacked.frag b/src/libcamera/shaders/bayer_unpacked.frag
index 1b85196ae..98dea512c 100644
--- a/src/libcamera/shaders/bayer_unpacked.frag
+++ b/src/libcamera/shaders/bayer_unpacked.frag
@@ -128,7 +128,7 @@ void main(void) {
             vec3(PATTERN.w, C, PATTERN.z) :
             vec3(PATTERN.yx, C));
 
-    rgb = rgb - blacklevel;
+    rgb = (rgb - blacklevel) / (1.0 - blacklevel);
 
     /*
      *   CCM is a 3x3 in the format