diff --git a/src/elements/phot.c b/src/elements/phot.c
index ba6fd2515..d014ba5f3 100644
--- a/src/elements/phot.c
+++ b/src/elements/phot.c
@@ -24,7 +24,8 @@ int update_PHOT(UPDATE_FUNC_ARGS) {
 		kill_part(i);
 		return 1;
 	}
-	if (1>rand()%10) update_PYRO(UPDATE_FUNC_SUBCALL_ARGS);
+	if (parts[i].temp > 506)
+		if (1>rand()%10) update_PYRO(UPDATE_FUNC_SUBCALL_ARGS);
 	for (rx=-1; rx<2; rx++)
 		for (ry=-1; ry<2; ry++)
 			if (x+rx>=0 && y+ry>=0 && x+rx<XRES && y+ry<YRES && (rx || ry)) {