Fix creation of invalid wall tiles by sign tool

2 files changed, 2 insertions, 3 deletions

diff --git a/src/main.c b/src/main.c
index 74074ce..d021e19 100644
--- a/src/main.c
+++ b/src/main.c
@@ -3109,8 +3109,7 @@ int main(int argc, char *argv[])
 					if (!bq)
 						add_sign_ui(vid_buf, x, y);
 				}
-
-				if (c==PT_FIGH)
+				else if (c==PT_FIGH)
 				{
 					if (!bq)
 						create_part(-1, x, y, PT_FIGH);
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;