diff --git a/src/elements/cbnw.cpp b/src/elements/cbnw.cpp
index 37625b06d..b480ed558 100644
--- a/src/elements/cbnw.cpp
+++ b/src/elements/cbnw.cpp
@@ -76,8 +76,9 @@ int update_CBNW(UPDATE_FUNC_ARGS) {
 				{
 					sim->part_change_type(i,x,y,PT_FIRE);
 					parts[i].life = 4;
+					parts[i].ctype = PT_WATR;
 				}
-				if ((r&0xFF)==PT_FIRE){
+				if ((r&0xFF)==PT_FIRE && parts[r>>8].ctype!=PT_WATR){
 					sim->kill_part(r>>8);
 						if(1>(rand()%150)){
 							sim->kill_part(i);
diff --git a/src/elements/watr.cpp b/src/elements/watr.cpp
index 9451a8298..f6a99339e 100644
--- a/src/elements/watr.cpp
+++ b/src/elements/watr.cpp
@@ -18,8 +18,9 @@ int update_WATR(UPDATE_FUNC_ARGS) {
 				{
 					sim->part_change_type(i,x,y,PT_FIRE);
 					parts[i].life = 4;
+					parts[i].ctype = PT_WATR;
 				}
-				if ((r&0xFF)==PT_FIRE){
+				if ((r&0xFF)==PT_FIRE && parts[r>>8].ctype!=PT_WATR){
 					sim->kill_part(r>>8);
 						if(1>(rand()%150)){
 							sim->kill_part(i);
diff --git a/src/elements/wtrv.cpp b/src/elements/wtrv.cpp
index 2e3838ae5..9c07e9fd1 100644
--- a/src/elements/wtrv.cpp
+++ b/src/elements/wtrv.cpp
@@ -13,6 +13,7 @@ int update_WTRV(UPDATE_FUNC_ARGS) {
 				{
 					sim->part_change_type(i,x,y,PT_FIRE);
 					parts[i].life = 4;
+					parts[i].ctype = PT_WATR;
 				}
 			}
 	if(parts[i].temp>1273&&parts[i].ctype==PT_FIRE)