diff --git a/src/js/utilJS.js b/src/js/utilJS.js
index a23fad97f2d5fcf8fc1dfa4d1a01cc523687a4f7..f22f67076bad69394a6fda76dd59496e8038e460 100644
--- a/src/js/utilJS.js
+++ b/src/js/utilJS.js
@@ -1211,7 +1211,7 @@ window.SkillIncrease = (function() {
 	function OralSkillIncrease(slave, skillIncrease) {
 		const He = capFirstChar(slave.pronoun);
 		const his = slave.possessivePronoun;
-		let r;
+		let r = '';
 		skillIncrease = skillIncrease || State.variables.skillIncrease || 1;
 
 		if (slave.oralSkill <= 10) {
@@ -1239,7 +1239,7 @@ window.SkillIncrease = (function() {
 	/** @param {App.Entity.SlaveState} slave */
 	function VaginalSkillIncrease(slave, skillIncrease) {
 		const He = capFirstChar(slave.pronoun);
-		let r;
+		let r = '';
 		skillIncrease = skillIncrease || State.variables.skillIncrease || 1;
 
 		if (slave.vaginalSkill <= 10) {
@@ -1268,7 +1268,7 @@ window.SkillIncrease = (function() {
 	function AnalSkillIncrease(slave, skillIncrease) {
 		const He = capFirstChar(slave.pronoun);
 		const his = slave.possessivePronoun;
-		let r;
+		let r ='';
 		skillIncrease = skillIncrease || State.variables.skillIncrease || 1;
 
 		if (slave.analSkill <= 10) {
@@ -1297,7 +1297,7 @@ window.SkillIncrease = (function() {
 	function WhoreSkillIncrease(slave, skillIncrease) {
 		const He = capFirstChar(slave.pronoun);
 		const his = slave.possessivePronoun;
-		let r;
+		let r ='';
 		skillIncrease = skillIncrease || State.variables.skillIncrease || 1;
 
 		if (slave.whoreSkill <= 10) {
@@ -1325,7 +1325,7 @@ window.SkillIncrease = (function() {
 	/** @param {App.Entity.SlaveState} slave */
 	function EntertainSkillIncrease(slave, skillIncrease) {
 		const He = capFirstChar(slave.pronoun);
-		let r;
+		let r ='';
 		skillIncrease = skillIncrease || State.variables.skillIncrease || 1;
 
 		if (slave.entertainSkill <= 10) {