diff --git a/src/main/java/net/ladenthin/bitcoinaddressfinder/ProducerOpenCL.java b/src/main/java/net/ladenthin/bitcoinaddressfinder/ProducerOpenCL.java
index d4a0a96..2e865cd 100644
--- a/src/main/java/net/ladenthin/bitcoinaddressfinder/ProducerOpenCL.java
+++ b/src/main/java/net/ladenthin/bitcoinaddressfinder/ProducerOpenCL.java
@@ -111,6 +111,7 @@ int getFreeThreads() {
     @Override
     public void releaseProducer() {
         super.releaseProducer();
+        resultReaderThreadPoolExecutor.shutdown();
         if (openCLContext != null) {
             openCLContext.release();
             openCLContext = null;
diff --git a/src/test/java/net/ladenthin/bitcoinaddressfinder/LogLevelChange.java b/src/test/java/net/ladenthin/bitcoinaddressfinder/LogLevelChange.java
index df19080..68cd7d2 100644
--- a/src/test/java/net/ladenthin/bitcoinaddressfinder/LogLevelChange.java
+++ b/src/test/java/net/ladenthin/bitcoinaddressfinder/LogLevelChange.java
@@ -27,4 +27,8 @@ public void turnOff() {
         final Logger logger = (Logger)LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
         logger.setLevel(Level.OFF);
     }
+    public void setLevel(Level newLevel) {
+        final Logger logger = (Logger)LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
+        logger.setLevel(newLevel);
+    }
 }
diff --git a/src/test/java/net/ladenthin/bitcoinaddressfinder/MainTest.java b/src/test/java/net/ladenthin/bitcoinaddressfinder/MainTest.java
index 7715e8a..455f500 100644
--- a/src/test/java/net/ladenthin/bitcoinaddressfinder/MainTest.java
+++ b/src/test/java/net/ladenthin/bitcoinaddressfinder/MainTest.java
@@ -18,6 +18,7 @@
 // @formatter:on
 package net.ladenthin.bitcoinaddressfinder;
 
+import ch.qos.logback.classic.Level;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.TemporaryFolder;
@@ -49,6 +50,8 @@ public class MainTest {
     private final Path config_LMDBToAddressFile_js = testRoundtripDirectory.resolve("config_LMDBToAddressFile.js");
     private final Path config_Find_SecretsFile_js = testRoundtripDirectory.resolve("config_Find_SecretsFile.js");
     
+    private final Path config_Find_1OpenCLDevice_js = testRoundtripDirectory.resolve("config_Find_1OpenCLDevice.js");
+    
     private final Path config_OpenCLInfo_js = testOpenCLInfoDirectory.resolve("config_OpenCLInfo.js");
 
     // <editor-fold defaultstate="collapsed" desc="testRoundtrip">
@@ -66,6 +69,23 @@ public void testRoundtrip_configurationsGiven_lmdbCreatedExportedAndRunFindSecre
     }
     // </editor-fold>
     
+    
+    // <editor-fold defaultstate="collapsed" desc="testRoundtrip OpenCL producer">
+    @Test
+    @OpenCLTest
+    public void testRoundtripOpenCLProducer_configurationsGiven_lmdbCreatedAndRunFindOpenCLDevice() throws IOException, InterruptedException {
+        new OpenCLPlatformAssume().assumeOpenCLLibraryLoadableAndOneOpenCL2_0OrGreaterDeviceAvailable();
+        // arrange
+        Main mainAddressFilesToLMDB = Main.createFromConfigurationFile(config_AddressFilesToLMDB_js);
+        mainAddressFilesToLMDB.run();
+        
+        new LogLevelChange().setLevel(Level.INFO);
+        
+        Main mainFind_1OpenCLDevice = Main.createFromConfigurationFile(config_Find_1OpenCLDevice_js);
+        mainFind_1OpenCLDevice.run();
+    }
+    // </editor-fold>
+    
     // <editor-fold defaultstate="collapsed" desc="testRoundtrip">
     @Test
     @OpenCLTest
diff --git a/src/test/java/net/ladenthin/bitcoinaddressfinder/ProducerOpenCLTest.java b/src/test/java/net/ladenthin/bitcoinaddressfinder/ProducerOpenCLTest.java
index f3d9c6a..074fef0 100644
--- a/src/test/java/net/ladenthin/bitcoinaddressfinder/ProducerOpenCLTest.java
+++ b/src/test/java/net/ladenthin/bitcoinaddressfinder/ProducerOpenCLTest.java
@@ -62,7 +62,7 @@ public void initProducer_configurationGiven_stateInitializedAndLogged() throws I
     // <editor-fold defaultstate="collapsed" desc="releaseProducer">
     @OpenCLTest
     @Test
-    public void releaseProducer_configurationGiven_stateInitializedAndLogged() throws IOException, InterruptedException {
+    public void releaseProducer_configurationGiven_stateInitializedAndLoggedAndExecuterServiceShutdown() throws IOException, InterruptedException {
         new OpenCLPlatformAssume().assumeOpenCLLibraryLoadableAndOneOpenCL2_0OrGreaterDeviceAvailable();
         CProducerOpenCL cProducerOpenCL = new CProducerOpenCL();
         MockConsumer mockConsumer = new MockConsumer();
@@ -71,6 +71,7 @@ public void releaseProducer_configurationGiven_stateInitializedAndLogged() throw
         ProducerOpenCL producerOpenCL = new ProducerOpenCL(cProducerOpenCL, mockConsumer, keyUtility, mockSecretFactory);
 
         AbstractProducerTest.verifyReleaseProducer(producerOpenCL);
+        assertThat(producerOpenCL.resultReaderThreadPoolExecutor.isShutdown(), is(equalTo(Boolean.TRUE)));
     }
     // </editor-fold>
 
diff --git a/src/test/resources/testRoundtrip/config_Find_1OpenCLDevice.js b/src/test/resources/testRoundtrip/config_Find_1OpenCLDevice.js
new file mode 100644
index 0000000..bc81ea2
--- /dev/null
+++ b/src/test/resources/testRoundtrip/config_Find_1OpenCLDevice.js
@@ -0,0 +1,33 @@
+{
+    "command": "Find",
+    "finder" : {
+        "consumerJava" : {
+            "lmdbConfigurationReadOnly" : {
+                "lmdbDirectory" : "src/test/resources/testRoundtrip/lmdb",
+                "useProxyOptimal" : true,
+                "logStatsOnInit" : true,
+                "logStatsOnClose" : false
+            },
+            "threads" : 8,
+            "delayEmptyConsumer" : 50,
+            "printStatisticsEveryNSeconds" : 10,
+            "queueSize" : 4,
+            "runtimePublicKeyCalculationCheck" : false,
+            "enableVanity" : false,
+            "vanityPattern" : "1[Ee][Mm][Ii][Ll].*"
+        },
+        "producerOpenCL" : [
+            {
+                "privateKeyMaxNumBits" : 256,
+                "platformIndex" : 0,
+                "deviceType" : -1,
+                "deviceIndex" : 0,
+                "gridNumBits" : 18,
+                "maxResultReaderThreads" : 4,
+                "delayBlockedReader" : 50
+            }
+        ],
+        "producerJava" : [
+        ]
+    }
+}