diff --git a/ktor-hosts/ktor-jetty/test/JettyDeadlock.kt b/ktor-hosts/ktor-jetty/test/JettyDeadlock.kt
index 46a3bbaf2e..549963f58c 100644
--- a/ktor-hosts/ktor-jetty/test/JettyDeadlock.kt
+++ b/ktor-hosts/ktor-jetty/test/JettyDeadlock.kt
@@ -44,12 +44,12 @@ class JettyDeadlockTest {
         val e = Executors.newCachedThreadPool()
         val q = LinkedBlockingQueue<String>()
 
-        println("starting")
+        //println("starting")
         val conns = (0..2000).map { number ->
             e.submit(Callable<String> {
                 try {
                     URL("http://localhost:$port/").openConnection().inputStream.bufferedReader().readLine().apply {
-                        println("$number says $this")
+                        //println("$number says $this")
                     } ?: "<empty>"
                 } catch (t: Throwable) {
                     "error: ${t.message}"
@@ -59,7 +59,7 @@ class JettyDeadlockTest {
             })
         }
 
-        println("Main thread is waiting for responses")
+        //println("Main thread is waiting for responses")
 
         TimeUnit.SECONDS.sleep(5)
         var attempts = 7
@@ -67,7 +67,7 @@ class JettyDeadlockTest {
         fun dump() {
             val (valid, invalid) = conns.filter { it.isDone }.partition { it.get() == "Help !" }
 
-            println("Completed: ${valid.size} valid, ${invalid.size} invalid of ${valid.size + invalid.size} total [attempts $attempts]")
+            //println("Completed: ${valid.size} valid, ${invalid.size} invalid of ${valid.size + invalid.size} total [attempts $attempts]")
         }
 
         while (true) {
diff --git a/ktor-hosts/ktor-test-host/src/org/jetbrains/ktor/testing/HostTestSuite.kt b/ktor-hosts/ktor-test-host/src/org/jetbrains/ktor/testing/HostTestSuite.kt
index 8c6665fe56..1ddcecdbb8 100644
--- a/ktor-hosts/ktor-test-host/src/org/jetbrains/ktor/testing/HostTestSuite.kt
+++ b/ktor-hosts/ktor-test-host/src/org/jetbrains/ktor/testing/HostTestSuite.kt
@@ -893,7 +893,7 @@ abstract class HostTestSuite<H : ApplicationHost> : HostTestBase<H>() {
 
     @Test(timeout = 30000L)
     fun testBlockingConcurrency() {
-        println()
+        //println()
         val completed = AtomicInteger(0)
 
         createAndStartServer({
@@ -904,7 +904,7 @@ abstract class HostTestSuite<H : ApplicationHost> : HostTestBase<H>() {
             get("/{index}") {
                 val index = call.parameters["index"]!!.toInt()
                 call.respondWrite {
-                    print("[$index] ")
+                    //print("[$index] ")
                     try {
                         append("OK:$index\n")
                     } finally {
@@ -927,7 +927,7 @@ abstract class HostTestSuite<H : ApplicationHost> : HostTestBase<H>() {
                         inputStream.reader().use { reader ->
                             val firstByte = reader.read()
                             if (firstByte == -1) {
-                                println("Premature end of response stream at iteration $i")
+                                //println("Premature end of response stream at iteration $i")
                                 fail("Premature end of response stream at iteration $i")
                             } else {
                                 assertEquals('O', firstByte.toChar())