diff --git a/src/main/java/eu/omp/irap/vespa/epntapclient/utils/Queries.java b/src/main/java/eu/omp/irap/vespa/epntapclient/utils/Queries.java
index d79027c..5f4286f 100644
--- a/src/main/java/eu/omp/irap/vespa/epntapclient/utils/Queries.java
+++ b/src/main/java/eu/omp/irap/vespa/epntapclient/utils/Queries.java
@@ -50,10 +50,8 @@ public final class Queries {
 	public static String getQuery(String tableName, Map<String, Object> params, int nbRow) {
 		StringJoiner join = new StringJoiner(" AND ");
 		for (Map.Entry<String, Object> param : params.entrySet()) {
-			Class paramClass = param.getValue().getClass();
-
-			if (paramClass == String.class && !"".equals(param.getValue())) {
-				join.add(param.getKey() + " LIKE '%" + param.getValue() + "%'");
+			if (param.getValue().getClass() == String.class) {
+				join.add(param.getKey() + " LIKE '" + param.getValue() + "'");
 			} else {
 				join.add(param.getKey() + " = " + param.getValue().toString());
 			}
--
libgit2 0.21.2