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-rw-r--r--src/powder.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/powder.c b/src/powder.c
index 4acd334..ca629cf 100644
--- a/src/powder.c
+++ b/src/powder.c
@@ -2940,7 +2940,7 @@ int create_parts(int x, int y, int rx, int ry, int c, int flags)
{
if (wall==r)
{
- if (c == SPC_AIR || c == SPC_HEAT || c == SPC_COOL || c == SPC_VACUUM || c == SPC_PGRV || c == SPC_NGRV)
+ if (c == SPC_AIR || c == SPC_HEAT || c == SPC_COOL || c == SPC_VACUUM || c == SPC_PGRV || c == SPC_NGRV || wall == WL_SIGN)
break;
if (wall == WL_ERASE)
b = 0;