diff --git a/src/main/java/com/salesforce/cdp/queryservice/core/QueryServiceResultSet.java b/src/main/java/com/salesforce/cdp/queryservice/core/QueryServiceResultSet.java
index 033f045..91e61f6 100644
--- a/src/main/java/com/salesforce/cdp/queryservice/core/QueryServiceResultSet.java
+++ b/src/main/java/com/salesforce/cdp/queryservice/core/QueryServiceResultSet.java
@@ -219,7 +219,7 @@ public InputStream getBinaryStream(int columnIndex) throws SQLException {
     public String getString(String columnLabel) throws SQLException {
         errorOutIfClosed();
         Object value = getObject(columnLabel);
-        wasNull.set(value == null || value.toString().equals("null") || value.toString().isEmpty());
+        wasNull.set(value == null);
         if (wasNull()) {
             return null;
         }