diff --git a/bundles/org.openhab.binding.dscalarm/src/main/java/org/openhab/binding/dscalarm/internal/handler/EnvisalinkBridgeHandler.java b/bundles/org.openhab.binding.dscalarm/src/main/java/org/openhab/binding/dscalarm/internal/handler/EnvisalinkBridgeHandler.java
index 0b9cba93fa169..e51dc13c8b6ee 100644
--- a/bundles/org.openhab.binding.dscalarm/src/main/java/org/openhab/binding/dscalarm/internal/handler/EnvisalinkBridgeHandler.java
+++ b/bundles/org.openhab.binding.dscalarm/src/main/java/org/openhab/binding/dscalarm/internal/handler/EnvisalinkBridgeHandler.java
@@ -165,18 +165,9 @@ public void closeConnection() {
                 logger.debug("closeConnection(): Closing Socket!");
                 tcpSocket.close();
                 tcpSocket = null;
-            }
-            if (tcpInput != null) {
-                logger.debug("closeConnection(): Closing Output Writer!");
-                tcpInput.close();
                 tcpInput = null;
-            }
-            if (tcpOutput != null) {
-                logger.debug("closeConnection(): Closing Input Reader!");
-                tcpOutput.close();
                 tcpOutput = null;
             }
-
             setConnected(false);
             logger.debug("closeConnection(): Closed TCP Connection!");
         } catch (IOException ioException) {
diff --git a/bundles/org.openhab.binding.dscalarm/src/main/java/org/openhab/binding/dscalarm/internal/handler/IT100BridgeHandler.java b/bundles/org.openhab.binding.dscalarm/src/main/java/org/openhab/binding/dscalarm/internal/handler/IT100BridgeHandler.java
index 8428baa8d33e2..d8d6ff04c74fe 100644
--- a/bundles/org.openhab.binding.dscalarm/src/main/java/org/openhab/binding/dscalarm/internal/handler/IT100BridgeHandler.java
+++ b/bundles/org.openhab.binding.dscalarm/src/main/java/org/openhab/binding/dscalarm/internal/handler/IT100BridgeHandler.java
@@ -19,7 +19,6 @@
 import java.io.UnsupportedEncodingException;
 import java.util.TooManyListenersException;
 
-import org.apache.commons.io.IOUtils;
 import org.eclipse.smarthome.core.thing.Bridge;
 import org.eclipse.smarthome.core.thing.ThingStatus;
 import org.eclipse.smarthome.io.transport.serial.PortInUseException;
@@ -189,12 +188,20 @@ public void closeConnection() {
         serialPort.removeEventListener();
 
         if (serialInput != null) {
-            IOUtils.closeQuietly(serialInput);
+            try {
+                serialInput.close();
+            } catch (IOException e) {
+                logger.debug("Error while closing the input stream: {}", e.getMessage());
+            }
             serialInput = null;
         }
 
         if (serialOutput != null) {
-            IOUtils.closeQuietly(serialOutput);
+            try {
+                serialOutput.close();
+            } catch (IOException e) {
+                logger.debug("Error while closing the output stream: {}", e.getMessage());
+            }
             serialOutput = null;
         }
 
diff --git a/bundles/org.openhab.binding.dscalarm/src/main/java/org/openhab/binding/dscalarm/internal/handler/TCPServerBridgeHandler.java b/bundles/org.openhab.binding.dscalarm/src/main/java/org/openhab/binding/dscalarm/internal/handler/TCPServerBridgeHandler.java
index f84a6a09ba48a..a6d71e6f441ed 100644
--- a/bundles/org.openhab.binding.dscalarm/src/main/java/org/openhab/binding/dscalarm/internal/handler/TCPServerBridgeHandler.java
+++ b/bundles/org.openhab.binding.dscalarm/src/main/java/org/openhab/binding/dscalarm/internal/handler/TCPServerBridgeHandler.java
@@ -172,16 +172,9 @@ public void closeConnection() {
             if (tcpSocket != null) {
                 tcpSocket.close();
                 tcpSocket = null;
-            }
-            if (tcpInput != null) {
-                tcpInput.close();
                 tcpInput = null;
-            }
-            if (tcpOutput != null) {
-                tcpOutput.close();
                 tcpOutput = null;
             }
-
             setConnected(false);
             logger.debug("closeConnection(): Closed TCP Connection!");
         } catch (IOException ioException) {