diff --git a/src/simulation/elements/GPMP.cpp b/src/simulation/elements/GPMP.cpp
index d36579ca5..aea251952 100644
--- a/src/simulation/elements/GPMP.cpp
+++ b/src/simulation/elements/GPMP.cpp
@@ -60,8 +60,6 @@ int Element_GPMP::update(UPDATE_FUNC_ARGS)
 			parts[i].temp = -256.0+273.15;
 
 		sim->gravmap[(y/CELL)*(XRES/CELL)+(x/CELL)] = 0.2f*(parts[i].temp-273.15);
-		if (y+CELL<YRES && sim->pv[y/CELL+1][x/CELL]<(parts[i].temp-273.15))
-			sim->gravmap[(y/CELL+1)*(XRES/CELL)+(x/CELL)] += 0.1f*((parts[i].temp-273.15)-sim->gravmap[(y/CELL+1)*(XRES/CELL)+(x/CELL)]);
 		for (rx=-2; rx<3; rx++)
 			for (ry=-2; ry<3; ry++)
 				if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
@@ -93,4 +91,4 @@ int Element_GPMP::graphics(GRAPHICS_FUNC_ARGS)
 }
 
 
-Element_GPMP::~Element_GPMP() {}
\ No newline at end of file
+Element_GPMP::~Element_GPMP() {}