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..502b00d3a8f8d 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 +188,18 @@ public void closeConnection() {
         serialPort.removeEventListener();
 
         if (serialInput != null) {
-            IOUtils.closeQuietly(serialInput);
+            try {
+                serialInput.close();
+            } catch (IOException e) {
+            }
             serialInput = null;
         }
 
         if (serialOutput != null) {
-            IOUtils.closeQuietly(serialOutput);
+            try {
+                serialOutput.close();
+            } catch (IOException e) {
+            }
             serialOutput = null;
         }