diff --git a/processing/src/main/java/edu/harvard/hms/dbmi/avillach/hpds/processing/AbstractProcessor.java b/processing/src/main/java/edu/harvard/hms/dbmi/avillach/hpds/processing/AbstractProcessor.java
index 814d7caf..099a9632 100644
--- a/processing/src/main/java/edu/harvard/hms/dbmi/avillach/hpds/processing/AbstractProcessor.java
+++ b/processing/src/main/java/edu/harvard/hms/dbmi/avillach/hpds/processing/AbstractProcessor.java
@@ -272,7 +272,7 @@ public List<InfoColumnMeta> getInfoStoreMeta() {
 	public List<String> searchInfoConceptValues(String conceptPath, String query) {
 		try {
 			return genomicProcessor.getInfoStoreValues(conceptPath).stream()
-					.filter(variableValue -> variableValue.toUpperCase().contains(query.toUpperCase()))
+					.filter(variableValue -> variableValue.toUpperCase(Locale.ENGLISH).contains(query.toUpperCase(Locale.ENGLISH)))
 					.collect(Collectors.toList());
 		} catch (UncheckedExecutionException e) {
 			if(e.getCause() instanceof RuntimeException) {