1 files changed, 0 insertions, 1 deletions
diff --git a/biology/Makefile b/biology/Makefile
index fefff2cc9379..73c80a9f05cd 100644
--- a/biology/Makefile
+++ b/biology/Makefile
@@ -3,7 +3,6 @@
 
     COMMENT = Biology
 
-    SUBDIR += adun
     SUBDIR += ariadne
     SUBDIR += artemis
     SUBDIR += avida