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-rw-r--r--src/misc_cmd.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/misc_cmd.cpp b/src/misc_cmd.cpp
index 9d1f9c71e..fc4bec9b6 100644
--- a/src/misc_cmd.cpp
+++ b/src/misc_cmd.cpp
@@ -97,7 +97,7 @@ CommandCost CmdDecreaseLoan(TileIndex tile, DoCommandFlag flags, uint32 p1, uint
loan -= loan % LOAN_INTERVAL;
break;
case 2: // Repay the given amount of loan
- if (p1 % LOAN_INTERVAL != 0 || (int32)p1 < LOAN_INTERVAL) return CMD_ERROR; // Invalid amount to loan
+ if (p1 % LOAN_INTERVAL != 0 || (int32)p1 < LOAN_INTERVAL || p1 > c->current_loan) return CMD_ERROR; // Invalid amount to loan
loan = p1;
break;
}