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-rw-r--r--src/elements/sprk.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/elements/sprk.c b/src/elements/sprk.c
index 004d6e8..0d579f5 100644
--- a/src/elements/sprk.c
+++ b/src/elements/sprk.c
@@ -8,7 +8,7 @@ int update_SPRK(UPDATE_FUNC_ARGS) {
{
if (ct==PT_WATR||ct==PT_SLTW||ct==PT_PSCN||ct==PT_NSCN||ct==PT_ETRD||ct==PT_INWR)
parts[i].temp = R_TEMP + 273.15f;
- if (!ct)
+ if (ct<=0 || ct>=PT_NUM)
ct = PT_METL;
part_change_type(i,x,y,ct);
parts[i].ctype = PT_NONE;