diff --git a/src/libcamera/software_isp/debayer_egl.cpp b/src/libcamera/software_isp/debayer_egl.cpp
index 33933b11..e6df04da 100644
--- a/src/libcamera/software_isp/debayer_egl.cpp
+++ b/src/libcamera/software_isp/debayer_egl.cpp
@@ -394,8 +394,8 @@ void DebayerEGL::setShaderVariableValues(eGLImage &eglImageIn, const DebayerPara
 	GLfloat firstRed[] = { firstRed_x_, firstRed_y_ };
 	GLfloat imgSize[] = { (GLfloat)width_,
 			      (GLfloat)height_ };
-	GLfloat Step[] = { static_cast<float>(bytesPerPixel_) / (inputConfig_.stride - 1),
-			   1.0f / (height_ - 1) };
+	GLfloat Step[] = { static_cast<float>(bytesPerPixel_) / inputConfig_.stride,
+			   1.0f / height_ };
 	GLfloat Stride = (GLfloat)width_ / (shaderStridePixels_ / bytesPerPixel_);
 	/*
 	 * Scale the output size from the native size the algorithm produces for