diff --git a/src/elements/ttan.c b/src/elements/ttan.c
index 82d2897c2..d0ff4ceed 100644
--- a/src/elements/ttan.c
+++ b/src/elements/ttan.c
@@ -16,7 +16,28 @@
 #include <element.h>
 
 int update_TTAN(UPDATE_FUNC_ARGS) {
-	bmap_blockair[y/CELL][x/CELL] = 1;
-	bmap_blockairh[y/CELL][x/CELL] = 1;
+	int nx, ny, ttan = 0;
+	if(nt<8)
+	{
+		for (nx=-1; nx<2; nx++)
+			for (ny=-1; ny<2; ny++) {
+				if (!nx != !ny) {
+					if((pmap[y+ny][x+nx]&0xFF)==PT_TTAN)
+					{
+						ttan++;
+					}
+				}
+			}
+		if(ttan>=2)
+		{
+			bmap_blockair[y/CELL][x/CELL] = 1;
+			bmap_blockairh[y/CELL][x/CELL] = 1;
+		}
+	}
+	if(parts[i].tmp)
+	{
+		bmap_blockair[y/CELL][x/CELL] = 1;
+		bmap_blockairh[y/CELL][x/CELL] = 1;
+	}
 	return 0;
 }
diff --git a/src/powder.c b/src/powder.c
index 82d52b7aa..dc8bb3bbf 100644
--- a/src/powder.c
+++ b/src/powder.c
@@ -1905,16 +1905,16 @@ void update_particles_i(pixel *vid, int start, int inc)
 #endif
 			}
 
-			j = surround_space = nt = 0;//if nt is 1 after this, then there is a particle around the current particle, that is NOT the current particle's type, for water movement.
+			j = surround_space = nt = 0;//if nt is greater than 1 after this, then there is a particle around the current particle, that is NOT the current particle's type, for water movement.
 			for (nx=-1; nx<2; nx++)
 				for (ny=-1; ny<2; ny++) {
 					if (nx||ny) {
 						surround[j] = r = pmap[y+ny][x+nx];
 						j++;
 						if (!(r&0xFF))
-							surround_space = 1;//there is empty space
+							surround_space++;//there is empty space
 						if ((r&0xFF)!=t)
-							nt = 1;//there is nothing or a different particle
+							nt++;//there is nothing or a different particle
 					}
 				}