diff --git a/tests/cts/hostside/src/com/android/cts/net/HostsideNetworkTestCase.java b/tests/cts/hostside/src/com/android/cts/net/HostsideNetworkTestCase.java
index d0567ae..2aa1032 100644
--- a/tests/cts/hostside/src/com/android/cts/net/HostsideNetworkTestCase.java
+++ b/tests/cts/hostside/src/com/android/cts/net/HostsideNetworkTestCase.java
@@ -31,6 +31,7 @@
 import com.android.tradefed.testtype.IAbi;
 import com.android.tradefed.testtype.IAbiReceiver;
 import com.android.tradefed.testtype.IBuildReceiver;
+import com.android.tradefed.util.RunUtil;
 
 import java.io.FileNotFoundException;
 import java.util.Map;
@@ -120,7 +121,7 @@
             i++;
             Log.v(TAG, "Package " + packageName + " not uninstalled yet (" + result
                     + "); sleeping 1s before polling again");
-            Thread.sleep(1000);
+            RunUtil.getDefault().sleep(1000);
         }
         fail("Package '" + packageName + "' not uinstalled after " + max_tries + " seconds");
     }
diff --git a/tests/cts/hostside/src/com/android/cts/net/HostsideRestrictBackgroundNetworkTests.java b/tests/cts/hostside/src/com/android/cts/net/HostsideRestrictBackgroundNetworkTests.java
index 7a613b3..21c78b7 100644
--- a/tests/cts/hostside/src/com/android/cts/net/HostsideRestrictBackgroundNetworkTests.java
+++ b/tests/cts/hostside/src/com/android/cts/net/HostsideRestrictBackgroundNetworkTests.java
@@ -20,6 +20,7 @@
 
 import com.android.ddmlib.Log;
 import com.android.tradefed.device.DeviceNotAvailableException;
+import com.android.tradefed.util.RunUtil;
 
 public class HostsideRestrictBackgroundNetworkTests extends HostsideNetworkTestCase {
 
@@ -359,7 +360,7 @@
             }
             Log.v(TAG, "whitelist check for uid " + uid + " doesn't match yet (expected "
                     + expected + ", got " + actual + "); sleeping 1s before polling again");
-            Thread.sleep(1000);
+            RunUtil.getDefault().sleep(1000);
         }
         fail("whitelist check for uid " + uid + " failed: expected "
                 + expected + ", got " + actual);
@@ -384,7 +385,7 @@
             if (result.equals(expectedResult)) return;
             Log.v(TAG, "Command '" + command + "' returned '" + result + " instead of '"
                     + expectedResult + "' on attempt #; sleeping 1s before polling again");
-            Thread.sleep(1000);
+            RunUtil.getDefault().sleep(1000);
         }
         fail("Command '" + command + "' did not return '" + expectedResult + "' after " + maxTries
                 + " attempts");