diff --git a/src/uncategorized/generateNewSlave.tw b/src/uncategorized/generateNewSlave.tw
index 9790ec902bc4de029845eb0f1a73ddafe9126e62..7e5e2fd2f80615b7f4c35091bc5457d98ee61931 100644
--- a/src/uncategorized/generateNewSlave.tw
+++ b/src/uncategorized/generateNewSlave.tw
@@ -19,7 +19,7 @@
 	<<include "Generate XX Slave">>
 <</if>>
 /* Superfetation as rare genetic disorder 1 from 100, not active for now.
-<<if (random(0,99) < 1)>> 
+<<if (random(0,99) <= 1)>> 
 	<<set $activeSlave.superfetation = 1>>
 <</if>>
 */