diff --git a/examples/js-demo.js b/examples/js-demo.js
index 4ff7642..45224bb 100644
--- a/examples/js-demo.js
+++ b/examples/js-demo.js
@@ -7,7 +7,7 @@ let tldCheck;
 
 tldCheck = "com";
 console.log("Is '" + tldCheck + "' a real TLD?");
-if (tldEnum.tldList.indexOf(tldCheck) != -1) {
+if (tldEnum.tldList.indexOf(tldCheck.toLowerCase()) != -1) {
     console.log("  yes");
 } else {
     console.log("  no");
@@ -15,7 +15,7 @@ if (tldEnum.tldList.indexOf(tldCheck) != -1) {
 
 tldCheck = "somethingWeird";
 console.log("Is '" + tldCheck + "' a real TLD?");
-if (tldEnum.tldList.indexOf(tldCheck) != -1) {
+if (tldEnum.tldList.indexOf(tldCheck.toLowerCase()) != -1) {
     console.log("  yes");
 } else {
     console.log("  no");
diff --git a/examples/php-demo.php b/examples/php-demo.php
index 8f4f765..85cf6e0 100644
--- a/examples/php-demo.php
+++ b/examples/php-demo.php
@@ -8,7 +8,7 @@ echo "There are " . count(TldEnum::TLD_ENUM) . " IANA TLDs\n";
 
 $tldCheck = "com";
 echo "Is '$tldCheck' a real TLD?\n";
-if (in_array($tldCheck, TldEnum::TLD_ENUM)) {
+if (in_array(strtolower($tldCheck), TldEnum::TLD_ENUM)) {
     echo "  yes\n";
 } else {
     echo "  no\n";
@@ -16,7 +16,7 @@ if (in_array($tldCheck, TldEnum::TLD_ENUM)) {
 
 $tldCheck = "somethingWeird";
 echo "Is '$tldCheck' a real TLD?\n";
-if (in_array($tldCheck, TldEnum::TLD_ENUM)) {
+if (in_array(strtolower($tldCheck), TldEnum::TLD_ENUM)) {
     echo "  yes\n";
 } else {
     echo "  no\n";