diff --git a/src/Organism/Organism.js b/src/Organism/Organism.js
index eeada03..672c302 100644
--- a/src/Organism/Organism.js
+++ b/src/Organism/Organism.js
@@ -151,7 +151,7 @@ class Organism {
     }
 
     calcRandomChance(prob) {
-        return (Math.random() * 100) <= prob;
+        return (Math.random() * 100) < prob;
     }
 
     attemptMove() {