diff --git a/src/js/physicalDevelopment.js b/src/js/physicalDevelopment.js
index d6ee0341521d720f25d3304ce3c0ddc3861e2507..bda4e15f788572986f865b1a805ed76594218ce3 100644
--- a/src/js/physicalDevelopment.js
+++ b/src/js/physicalDevelopment.js
@@ -144,7 +144,19 @@ window.physicalDevelopment = (function physicalDevelopment() {
 				} else if (slave.height <= 173) {
 					slave.height += 3;
 				}
-			} else if (slave.physicalAge <= 18) {
+			} else if (slave.physicalAge === 15) {
+				if (slave.height <= 174) {
+					slave.height += jsEither([0, 0, 1, 1]);
+				}
+			} else if (slave.physicalAge === 16) {
+				if (slave.height <= 174) {
+					slave.height += jsEither([0, 0, 1, 1]);
+				}
+			} else if (slave.physicalAge === 17) {
+				if (slave.height <= 174) {
+					slave.height += jsEither([0, 0, 1, 1]);
+				}
+			} else if (slave.physicalAge === 18) {
 				if (slave.height <= 174) {
 					slave.height += jsEither([0, 0, 1, 1]);
 				}