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-rw-r--r--landscape.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/landscape.c b/landscape.c
index d213fc913..839b5dbd4 100644
--- a/landscape.c
+++ b/landscape.c
@@ -307,7 +307,7 @@ int32 CmdClearArea(int ex, int ey, uint32 flags, uint32 p1, uint32 p2)
int x,y;
bool success = false;
- if (p1 > MapSize()) return CMD_ERROR;
+ if (p1 >= MapSize()) return CMD_ERROR;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);