diff --git a/README.md b/README.md
index c7c053fc..23f8a133 100644
--- a/README.md
+++ b/README.md
@@ -173,7 +173,7 @@ to add integration tests located in a different source set)
 another Java processes for mutation testing execution and usually `jvmArgs` should be used to for example increase maximum memory size
 (see [#7](https://github.com/szpak/gradle-pitest-plugin/issues/7));
  - `additionalMutableCodePaths` - additional classes to mutate (useful for integration tests with production code in a different module - see [#25](https://github.com/szpak/gradle-pitest-plugin/issues/25))
- - `useClasspathFile` - enables passing additional classpath as a file content (useful for Windows users with lots of classpath elements, disabled by default)
+ - `useClasspathFile` - enables passing additional classpath as a file content (useful for Windows users with lots of classpath elements, enabled by default)
  - `fileExtensionsToFilter` - provides ability to filter additional file extensions from PIT classpath (see [#53](https://github.com/szpak/gradle-pitest-plugin/issues/53))
 
 For example:
diff --git a/src/funcTest/resources/testProjects/junit5simple/build-pit-1.8-junit-platform-5.7.gradle b/src/funcTest/resources/testProjects/junit5simple/build-pit-1.8-junit-platform-5.7.gradle
index e00629b8..765d36ef 100644
--- a/src/funcTest/resources/testProjects/junit5simple/build-pit-1.8-junit-platform-5.7.gradle
+++ b/src/funcTest/resources/testProjects/junit5simple/build-pit-1.8-junit-platform-5.7.gradle
@@ -34,6 +34,7 @@ test {
 }
 
 pitest {
+    useClasspathFile = false
     pitestVersion = "1.8.1" //PIT 1.9.0 required junit5PluginVersion 1.0.0+ which doesn't support older JUnit Platform 1.7
 //    testPlugin = "junit5" //not needed - 'junit5PluginVersion' should implicitly set it
     junit5PluginVersion = "0.14"
diff --git a/src/funcTest/resources/testProjects/junit5simple/build.gradle b/src/funcTest/resources/testProjects/junit5simple/build.gradle
index c9747f0e..3b934fed 100644
--- a/src/funcTest/resources/testProjects/junit5simple/build.gradle
+++ b/src/funcTest/resources/testProjects/junit5simple/build.gradle
@@ -29,6 +29,7 @@ test {
 }
 
 pitest {
+    useClasspathFile = false
     pitestVersion = "1.14.4"
     junit5PluginVersion = "1.2.0"    //with no longer shaded junit-platform-launcher
     verbose = true  //for "ClassNotFoundException: org.junit.platform.launcher.core.LauncherFactory" which should not happen
diff --git a/src/funcTest/resources/testProjects/simple1/build.gradle b/src/funcTest/resources/testProjects/simple1/build.gradle
index e43300a2..71144df9 100644
--- a/src/funcTest/resources/testProjects/simple1/build.gradle
+++ b/src/funcTest/resources/testProjects/simple1/build.gradle
@@ -21,3 +21,7 @@ group = "pitest.test"
 dependencies {
     testImplementation 'junit:junit:4.12'
 }
+
+pitest {
+    useClasspathFile = false
+}
diff --git a/src/main/groovy/info/solidsoft/gradle/pitest/PitestPlugin.groovy b/src/main/groovy/info/solidsoft/gradle/pitest/PitestPlugin.groovy
index bafa28d8..89bdc3ac 100644
--- a/src/main/groovy/info/solidsoft/gradle/pitest/PitestPlugin.groovy
+++ b/src/main/groovy/info/solidsoft/gradle/pitest/PitestPlugin.groovy
@@ -114,7 +114,7 @@ class PitestPlugin implements Plugin<Project> {
         extension.testSourceSets.set([javaSourceSets.getByName(SourceSet.TEST_SOURCE_SET_NAME)])
         extension.mainSourceSets.set([javaSourceSets.getByName(SourceSet.MAIN_SOURCE_SET_NAME)])
         extension.fileExtensionsToFilter.set(DEFAULT_FILE_EXTENSIONS_TO_FILTER_FROM_CLASSPATH)
-        extension.useClasspathFile.set(false)
+        extension.useClasspathFile.set(true)
         extension.verbosity.set("NO_SPINNER")
         extension.addJUnitPlatformLauncher.set(true)
     }
diff --git a/src/test/groovy/info/solidsoft/gradle/pitest/BasicProjectBuilderSpec.groovy b/src/test/groovy/info/solidsoft/gradle/pitest/BasicProjectBuilderSpec.groovy
index e2da5bec..d09134d9 100644
--- a/src/test/groovy/info/solidsoft/gradle/pitest/BasicProjectBuilderSpec.groovy
+++ b/src/test/groovy/info/solidsoft/gradle/pitest/BasicProjectBuilderSpec.groovy
@@ -50,6 +50,7 @@ class BasicProjectBuilderSpec extends Specification {
         pitestConfig = project.getExtensions().getByType(PitestPluginExtension)
 
         project.group = 'test.group'
+        project.pitest.useClasspathFile = false
     }
 
     protected PitestTask getJustOnePitestTaskOrFail() {