diff --git a/src/integration/java/com/ibm/eventstreams/connect/mqsink/MQSinkTaskIT.java b/src/integration/java/com/ibm/eventstreams/connect/mqsink/MQSinkTaskIT.java
index f6c8ebf..a61908b 100644
--- a/src/integration/java/com/ibm/eventstreams/connect/mqsink/MQSinkTaskIT.java
+++ b/src/integration/java/com/ibm/eventstreams/connect/mqsink/MQSinkTaskIT.java
@@ -127,6 +127,27 @@ public void verifyStringMessages() throws JMSException {
         assertEquals("world", messagesInMQ.get(1).getBody(String.class));
     }
 
+     @Test
+    public void verifyMQSslUseIbmCipherMappings() {
+        final Map<String, String> connectorConfigProps = createDefaultConnectorProperties();
+        connectorConfigProps.put("mq.message.builder",
+                DEFAULT_MESSAGE_BUILDER);
+        connectorConfigProps.put("mq.ssl.use.ibm.cipher.mappings", "true");
+
+        final MQSinkTask newConnectTask = new MQSinkTask();
+        newConnectTask.start(connectorConfigProps);
+
+        // Check if the config reflects the change
+        assertEquals(System.getProperty("com.ibm.mq.cfg.useIBMCipherMappings"), "true");
+        
+        // Verify the exception messages
+        connectorConfigProps.put("mq.ssl.use.ibm.cipher.mappings", "Not a boolean");
+        final ConfigException exc = assertThrows(ConfigException.class, () -> {
+            newConnectTask.start(connectorConfigProps);
+        });
+        assertEquals("Invalid value Not a boolean for configuration mq.ssl.use.ibm.cipher.mappings: Expected value to be either true or false", exc.getMessage());
+    }
+
     @Test
     public void verifyStringJmsMessages() throws JMSException {
         final MQSinkTask newConnectTask = new MQSinkTask();
diff --git a/src/main/java/com/ibm/eventstreams/connect/mqsink/JMSWorker.java b/src/main/java/com/ibm/eventstreams/connect/mqsink/JMSWorker.java
index da588ab..dd54e97 100644
--- a/src/main/java/com/ibm/eventstreams/connect/mqsink/JMSWorker.java
+++ b/src/main/java/com/ibm/eventstreams/connect/mqsink/JMSWorker.java
@@ -102,7 +102,7 @@ public void configure(final AbstractConfig config) throws ConnectException {
         mqConnectionHelper = new MQConnectionHelper(config);
 
         if (mqConnectionHelper.getUseIBMCipherMappings() != null) {
-            System.setProperty("com.ibm.mq.cfg.useIBMCipherMappings", mqConnectionHelper.getUseIBMCipherMappings());
+            System.setProperty("com.ibm.mq.cfg.useIBMCipherMappings", Boolean.toString(mqConnectionHelper.getUseIBMCipherMappings()));
         }
 
         try {
diff --git a/src/main/java/com/ibm/eventstreams/connect/mqsink/MQConnectionHelper.java b/src/main/java/com/ibm/eventstreams/connect/mqsink/MQConnectionHelper.java
index cf0b8e0..fea010a 100644
--- a/src/main/java/com/ibm/eventstreams/connect/mqsink/MQConnectionHelper.java
+++ b/src/main/java/com/ibm/eventstreams/connect/mqsink/MQConnectionHelper.java
@@ -63,8 +63,8 @@ public Boolean isPersistent() {
         return config.getBoolean(MQSinkConfig.CONFIG_NAME_MQ_PERSISTENT);
     }
 
-    public String getUseIBMCipherMappings() {
-        return config.getString(MQSinkConfig.CONFIG_NAME_MQ_SSL_USE_IBM_CIPHER_MAPPINGS);
+    public Boolean getUseIBMCipherMappings() {
+        return config.getBoolean(MQSinkConfig.CONFIG_NAME_MQ_SSL_USE_IBM_CIPHER_MAPPINGS);
     }
 
     public int getTransportType() {