diff --git a/src/simulation/Air.cpp b/src/simulation/Air.cpp
index 39418364e..ff3ea6e16 100644
--- a/src/simulation/Air.cpp
+++ b/src/simulation/Air.cpp
@@ -40,11 +40,6 @@ void Air::update_airh(void)
 {
 	int x, y, i, j;
 	float odh, dh, dx, dy, f, tx, ty;
-	for (y=0; y<YRES/CELL; y++)
-		for (x=0; x<XRES/CELL; x++)
-		{
-			bmap_blockairh[y][x] = (bmap[y][x]==WL_WALL || bmap[y][x]==WL_WALLELEC || bmap[y][x]==WL_GRAV || (bmap[y][x]==WL_EWALL && !emap[y][x]));
-		}
 	for (i=0; i<YRES/CELL; i++) //reduces pressure/velocity on the edges every frame
 	{
 		hv[i][0] = 295.15f;
@@ -122,11 +117,6 @@ void Air::update_air(void)
 	int x = 0, y = 0, i = 0, j = 0;
 	float dp = 0.0f, dx = 0.0f, dy = 0.0f, f = 0.0f, tx = 0.0f, ty = 0.0f;
 
-	for (y=0; y<YRES/CELL; y++)
-		for (x=0; x<XRES/CELL; x++)
-		{
-			bmap_blockair[y][x] = (bmap[y][x]==WL_WALL || bmap[y][x]==WL_WALLELEC || (bmap[y][x]==WL_EWALL && !emap[y][x]));
-		}
 	if (airMode != 4) { //airMode 4 is no air/pressure update
 
 		for (i=0; i<YRES/CELL; i++) //reduces pressure/velocity on the edges every frame