diff --git a/gamedir/Data-1.13/TableData/Items/StructureConstruct.xml b/gamedir/Data-1.13/TableData/Items/StructureConstruct.xml
index c95318015..240b82f33 100644
--- a/gamedir/Data-1.13/TableData/Items/StructureConstruct.xml
+++ b/gamedir/Data-1.13/TableData/Items/StructureConstruct.xml
@@ -21,7 +21,7 @@
 		<szTileSetDisplayName>Concertina wire</szTileSetDisplayName>
 		<szTileSetName>spot_1.sti</szTileSetName>
 		<dCreationCost>1.0</dCreationCost>
-		<fFortifyAdjacentAdjustment>1</fFortifyAdjacentAdjustment>
+		<fFortifyAdjacentAdjustment>0</fFortifyAdjacentAdjustment>  <!--recommended to be 0 for concertina wire-->
 		<northfacingtile>3</northfacingtile>
 		<northfacingtile>5</northfacingtile>
 		<southfacingtile>3</southfacingtile>