diff --git a/src/simulation/elements/H2.cpp b/src/simulation/elements/H2.cpp
index 6bcbb2e9ad..4610fd8cbb 100644
--- a/src/simulation/elements/H2.cpp
+++ b/src/simulation/elements/H2.cpp
@@ -96,6 +96,7 @@ int Element_H2::update(UPDATE_FUNC_ARGS)
 			int j;
 			float temp = parts[i].temp;
 			sim->create_part(i,x,y,PT_NBLE);
+			parts[i].tmp = 0x1;
 
 			j = sim->create_part(-3,x+rand()%3-1,y+rand()%3-1,PT_NEUT);
 			if (j>-1)
diff --git a/src/simulation/elements/NBLE.cpp b/src/simulation/elements/NBLE.cpp
index 02e2953ef8..5c689f5935 100644
--- a/src/simulation/elements/NBLE.cpp
+++ b/src/simulation/elements/NBLE.cpp
@@ -51,7 +51,7 @@ int Element_NBLE::update(UPDATE_FUNC_ARGS)
 {
 	if (parts[i].temp > 5273.15 && sim->pv[y/CELL][x/CELL] > 100.0f)
 	{
-		parts[i].tmp = 1;
+		parts[i].tmp |= 0x1;
 		if (!(rand()%5))
 		{
 			int j;
diff --git a/src/simulation/elements/SPRK.cpp b/src/simulation/elements/SPRK.cpp
index 6dfde78338..423c05c68c 100644
--- a/src/simulation/elements/SPRK.cpp
+++ b/src/simulation/elements/SPRK.cpp
@@ -48,8 +48,8 @@ Element_SPRK::Element_SPRK()
 
 //#TPT-Directive ElementHeader Element_SPRK static int update(UPDATE_FUNC_ARGS)
 int Element_SPRK::update(UPDATE_FUNC_ARGS)
- {
-	 int r, rx, ry, rt, conduct_sprk, nearp, pavg, ct = parts[i].ctype, sender, receiver;
+{
+	int r, rx, ry, nearp, pavg, ct = parts[i].ctype, sender, receiver;
 	Element_FIRE::update(UPDATE_FUNC_SUBCALL_ARGS);
 
 	if (parts[i].life<=0)
@@ -96,13 +96,13 @@ int Element_SPRK::update(UPDATE_FUNC_ARGS)
 		}
 		break;
 	case PT_NBLE:
-		if (parts[i].life<=1 && parts[i].temp<5273.15f)
+		if (parts[i].life<=1 && !(parts[i].tmp&0x1))
 		{
 			parts[i].life = rand()%150+50;
 			sim->part_change_type(i,x,y,PT_PLSM);
 			parts[i].ctype = PT_NBLE;
 			if (parts[i].temp > 5273.15)
-				parts[i].tmp |= 4;
+				parts[i].tmp |= 0x4;
 			parts[i].temp = 3500;
 			sim->pv[y/CELL][x/CELL] += 1;
 		}
@@ -302,7 +302,7 @@ int Element_SPRK::update(UPDATE_FUNC_ARGS)
 						goto conduct;
 					continue;
 				case PT_NBLE:
-					if (parts[i].temp < 5273.15f)
+					if (!(parts[i].tmp&0x1))
 						goto conduct;
 					continue;
 				case PT_PSCN: