diff --git a/src/simulation/elements/TRON.cpp b/src/simulation/elements/TRON.cpp
index 873596edc..cbeb989a5 100644
--- a/src/simulation/elements/TRON.cpp
+++ b/src/simulation/elements/TRON.cpp
@@ -234,13 +234,13 @@ static int trymovetron(Simulation * sim, int x, int y, int dir, int i, int len)
 		rx += tron_rx[dir];
 		ry += tron_ry[dir];
 		r = sim->pmap[ry][rx];
-		if (canmovetron(sim, r, k-1) && !sim->bmap[(ry)/CELL][(rx)/CELL] && ry > CELL && rx > CELL && ry < YRES-CELL && rx < XRES-CELL)
+		if (canmovetron(sim, r, k-1) && !sim->bmap[(ry)/CELL][(rx)/CELL] && ry >= CELL && rx >= CELL && ry < YRES-CELL && rx < XRES-CELL)
 		{
 			count++;
 			for (tx = rx - tron_ry[dir] , ty = ry - tron_rx[dir], j=1; abs(tx-rx) < (len-k) && abs(ty-ry) < (len-k); tx-=tron_ry[dir],ty-=tron_rx[dir],j++)
 			{
 				r = sim->pmap[ty][tx];
-				if (canmovetron(sim, r, j+k-1) && !sim->bmap[(ty)/CELL][(tx)/CELL] && ty > CELL && tx > CELL && ty < YRES-CELL && tx < XRES-CELL)
+				if (canmovetron(sim, r, j+k-1) && !sim->bmap[(ty)/CELL][(tx)/CELL] && ty >= CELL && tx >= CELL && ty < YRES-CELL && tx < XRES-CELL)
 				{
 					if (j == (len-k))//there is a safe path, so we can break out
 						return len+1;
@@ -252,7 +252,7 @@ static int trymovetron(Simulation * sim, int x, int y, int dir, int i, int len)
 			for (tx = rx + tron_ry[dir] , ty = ry + tron_rx[dir], j=1; abs(tx-rx) < (len-k) && abs(ty-ry) < (len-k); tx+=tron_ry[dir],ty+=tron_rx[dir],j++)
 			{
 				r = sim->pmap[ty][tx];
-				if (canmovetron(sim, r, j+k-1) && !sim->bmap[(ty)/CELL][(tx)/CELL] && ty > CELL && tx > CELL && ty < YRES-CELL && tx < XRES-CELL)
+				if (canmovetron(sim, r, j+k-1) && !sim->bmap[(ty)/CELL][(tx)/CELL] && ty >= CELL && tx >= CELL && ty < YRES-CELL && tx < XRES-CELL)
 				{
 					if (j == (len-k))
 						return len+1;