diff --git a/Defs/Buildings/compact.xml b/Defs/Buildings/compact.xml
index a17b301..1389d5f 100644
--- a/Defs/Buildings/compact.xml
+++ b/Defs/Buildings/compact.xml
@@ -38,6 +38,9 @@
                 <capacity>12</capacity>
             </li>
         </modExtensions>
+        <researchPrerequisites>
+            <li>HE_HighDensityHydroponics</li>
+        </researchPrerequisites>
     </ThingDef>
 
 </Defs>
\ No newline at end of file