diff --git a/src/order_cmd.cpp b/src/order_cmd.cpp
index b9f1a0e4fc..a1a94cd8e5 100644
--- a/src/order_cmd.cpp
+++ b/src/order_cmd.cpp
@@ -876,7 +876,7 @@ CommandCost CmdModifyOrder(TileIndex tile, DoCommandFlag flags, uint32 p1, uint3
 			break;
 
 		case OT_CONDITIONAL:
-			if (mof != MOF_COND_VARIABLE && mof != MOF_COND_COMPARATOR && mof != MOF_COND_VALUE) return CMD_ERROR;
+			if (mof != MOF_COND_VARIABLE && mof != MOF_COND_COMPARATOR && mof != MOF_COND_VALUE && mof != MOF_COND_DESTINATION) return CMD_ERROR;
 			break;
 
 		default: