diff --git a/lemminx-liberty/src/main/java/io/openliberty/tools/langserver/lemminx/services/FeatureService.java b/lemminx-liberty/src/main/java/io/openliberty/tools/langserver/lemminx/services/FeatureService.java
index 353fdb24..689fdc3c 100644
--- a/lemminx-liberty/src/main/java/io/openliberty/tools/langserver/lemminx/services/FeatureService.java
+++ b/lemminx-liberty/src/main/java/io/openliberty/tools/langserver/lemminx/services/FeatureService.java
@@ -634,7 +634,7 @@ public Set<String> getAllPlatformsForVersionLessFeature(String featureName, Stri
         }
         return featureNames.stream()
                 .map(f -> getAllPlatformsForFeature(f, libertyVersion, libertyRuntime, requestDelay, documentURI))
-                .flatMap(Set::stream).collect(Collectors.toSet());
+                .flatMap(Set::stream).map(String::toLowerCase).collect(Collectors.toSet());
     }
 
     /**
diff --git a/lemminx-liberty/src/test/java/io/openliberty/LibertyDiagnosticTest.java b/lemminx-liberty/src/test/java/io/openliberty/LibertyDiagnosticTest.java
index d83c7f20..00532f24 100644
--- a/lemminx-liberty/src/test/java/io/openliberty/LibertyDiagnosticTest.java
+++ b/lemminx-liberty/src/test/java/io/openliberty/LibertyDiagnosticTest.java
@@ -607,7 +607,6 @@ public void testUnresolvedPlatformForVersionlessFeatureDiagnostic() throws BadLo
     @Test
     public void testValidPlatformDiagnostic() throws BadLocationException {
 
-
        String serverXML = String.join(newLine, //
                 "<server description=\"Sample Liberty server\">", //
                 "       <featureManager>", //
@@ -627,6 +626,7 @@ public void testValidPlatformDiagnostic() throws BadLocationException {
                 "       </featureManager>", //
                 "</server>" //
         );
+
         XMLAssert.testDiagnosticsFor(serverXML, null, null, serverXMLURI);
 
         serverXML = String.join(newLine, //
@@ -639,5 +639,30 @@ public void testValidPlatformDiagnostic() throws BadLocationException {
                 "</server>" //
         );
         XMLAssert.testDiagnosticsFor(serverXML, null, null, serverXMLURI);
+
+        serverXML = String.join(newLine, //
+                "<server description=\"Sample Liberty server\">", //
+                "       <featureManager>", //
+                "               <feature>mpMetrics</feature>", //
+                "               <feature>mpHealth</feature>", //
+                "               <platform>microProfile-5.0</platform>", //
+                "       </featureManager>", //
+                "</server>" //
+        );
+
+        XMLAssert.testDiagnosticsFor(serverXML, null, null, serverXMLURI);
+
+        serverXML = String.join(newLine, //
+                "<server description=\"Sample Liberty server\">", //
+                "       <featureManager>", //
+                "               <feature>servlet</feature>", //
+                "               <feature>jpa</feature>", //
+                "               <feature>jaxrs</feature>", //
+                "               <platform>jakartaee-9.1</platform>", //
+                "       </featureManager>", //
+                "</server>" //
+        );
+
+        XMLAssert.testDiagnosticsFor(serverXML, null, null, serverXMLURI);
     }
 }
\ No newline at end of file