diff --git a/src/main/java/com/redhat/devtools/intellij/lsp4mp4ij/psi/core/project/MicroProfileConfigPropertyInformation.java b/src/main/java/com/redhat/devtools/intellij/lsp4mp4ij/psi/core/project/MicroProfileConfigPropertyInformation.java
index 09d35b462..59312baa6 100644
--- a/src/main/java/com/redhat/devtools/intellij/lsp4mp4ij/psi/core/project/MicroProfileConfigPropertyInformation.java
+++ b/src/main/java/com/redhat/devtools/intellij/lsp4mp4ij/psi/core/project/MicroProfileConfigPropertyInformation.java
@@ -129,7 +129,7 @@ public String getSourceConfigFileURI() {
 	 * @return the property name with any profile information removed
 	 */
 	public static String getPropertyNameWithoutProfile(String propertyNameWithProfile) {
-		if (propertyNameWithProfile.charAt(0) == '%') {
+		if (propertyNameWithProfile.length() > 0 && propertyNameWithProfile.charAt(0) == '%') {
 			int firstPeriodIndex = propertyNameWithProfile.indexOf('.');
 			return propertyNameWithProfile.substring(firstPeriodIndex + 1);
 		} else {