diff --git a/src/qcam/assets/shader/YUV_2_planes.frag b/src/qcam/assets/shader/YUV_2_planes.frag
index da8dbcc5f801..1d5d1206248f 100644
--- a/src/qcam/assets/shader/YUV_2_planes.frag
+++ b/src/qcam/assets/shader/YUV_2_planes.frag
@@ -36,7 +36,7 @@ void main(void)
 #error Invalid pattern
 #endif
 
-	vec3 rgb = yuv2rgb_matrix * (vec3(y, uv) - yuv2rgb_offset);
+	vec3 rgb = yuv2rgb_matrix * (yuv - yuv2rgb_offset);
 
 	gl_FragColor = vec4(rgb, 1.0);
 }
diff --git a/src/qcam/assets/shader/YUV_3_planes.frag b/src/qcam/assets/shader/YUV_3_planes.frag
index e754129d74d1..8f788e90a6f8 100644
--- a/src/qcam/assets/shader/YUV_3_planes.frag
+++ b/src/qcam/assets/shader/YUV_3_planes.frag
@@ -30,7 +30,7 @@ void main(void)
 	yuv.y = texture2D(tex_u, textureOut).r;
 	yuv.z = texture2D(tex_v, textureOut).r;
 
-	vec3 rgb = yuv2rgb_matrix * (vec3(y, uv) - yuv2rgb_offset);
+	vec3 rgb = yuv2rgb_matrix * (yuv - yuv2rgb_offset);
 
 	gl_FragColor = vec4(rgb, 1.0);
 }