diff --git a/rpcs3/Emu/RSX/Program/GLSLCommon.cpp b/rpcs3/Emu/RSX/Program/GLSLCommon.cpp
index 308ab3f66a..1c44360be4 100644
--- a/rpcs3/Emu/RSX/Program/GLSLCommon.cpp
+++ b/rpcs3/Emu/RSX/Program/GLSLCommon.cpp
@@ -614,7 +614,7 @@ namespace glsl
 				"		const float real_f = max(far_plane, near_plane);\n"
 				"		const double depth_range = double(real_f - real_n);\n"
 				"		const double inv_range = (depth_range > 0.000001) ? (1.0 / (depth_range * pos.w)) : 0.0;\n"
-				"		const double d = (double(pos.z) - real_n) * inv_range;\n"
+				"		const double d = (double(pos.z) - double(real_n * pos.w)) * inv_range;\n"
 				"		return vec4(pos.xy, float(d * pos.w), pos.w);\n"
 				"	}\n"
 				"	else\n"