diff --git a/mods/ts/rules/gdi-structures.yaml b/mods/ts/rules/gdi-structures.yaml
index 63921bffac..e273925598 100644
--- a/mods/ts/rules/gdi-structures.yaml
+++ b/mods/ts/rules/gdi-structures.yaml
@@ -326,7 +326,7 @@ GAPLUG:
 		Bounds: 115,72,0,-12
 	Buildable:
 		BuildPaletteOrder: 100
-		Prerequisites: proc, gatech
+		Prerequisites: proc, gatech, ~structures.gdi
 		Queue: Building
 	Building:
 		Footprint: xxx xxx