diff --git a/build.gradle.kts b/build.gradle.kts
index cc022e012ee..f0800206256 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -54,9 +54,7 @@ pill {
 }
 
 val isTeamcityBuild = project.kotlinBuildProperties.isTeamcityBuild
-val includeStdlibJsIr by extra(
-    findProperty("include.stdlib.js.ir")?.let { it.toString().toBoolean() } ?: isTeamcityBuild
-)
+val includeStdlibJsIr by extra(project.kotlinBuildProperties.includeStdlibJsIr)
 
 val configuredJdks: List<JdkId> =
     getConfiguredJdks().also {
@@ -327,7 +325,7 @@ fun Task.listConfigurationContents(configName: String) {
 
 val defaultJvmTarget = "1.8"
 val defaultJavaHome = jdkPath(defaultJvmTarget)
-val ignoreTestFailures by extra(project.findProperty("ignoreTestFailures")?.toString()?.toBoolean() ?: project.hasProperty("teamcity"))
+val ignoreTestFailures by extra(project.kotlinBuildProperties.ignoreTestFailures)
 
 allprojects {
 
diff --git a/buildSrc/src/main/kotlin/BuildPropertiesExt.kt b/buildSrc/src/main/kotlin/BuildPropertiesExt.kt
index 49a2dc60b5e..9fe0a600bb9 100644
--- a/buildSrc/src/main/kotlin/BuildPropertiesExt.kt
+++ b/buildSrc/src/main/kotlin/BuildPropertiesExt.kt
@@ -15,4 +15,8 @@ val KotlinBuildProperties.relocation: Boolean get() = postProcessing
 
 val KotlinBuildProperties.proguard: Boolean get() = postProcessing && getBoolean("kotlin.build.proguard", isTeamcityBuild)
 
-val KotlinBuildProperties.jarCompression: Boolean get() = getBoolean("kotlin.build.jar.compression", isTeamcityBuild)
\ No newline at end of file
+val KotlinBuildProperties.jarCompression: Boolean get() = getBoolean("kotlin.build.jar.compression", isTeamcityBuild)
+
+val KotlinBuildProperties.ignoreTestFailures: Boolean get() = getBoolean("ignoreTestFailures", isTeamcityBuild)
+
+val KotlinBuildProperties.includeStdlibJsIr: Boolean get() = getBoolean("include.stdlib.js.ir", isTeamcityBuild)
\ No newline at end of file
diff --git a/js/js.tests/build.gradle.kts b/js/js.tests/build.gradle.kts
index 83c78e050a1..3ae967ac116 100644
--- a/js/js.tests/build.gradle.kts
+++ b/js/js.tests/build.gradle.kts
@@ -172,7 +172,7 @@ val runMocha by task<NpmTask> {
     val target = if (project.hasProperty("teamcity")) "runOnTeamcity" else "test"
     setArgs(listOf("run", target))
 
-    setIgnoreExitValue(rootProject.getBooleanProperty("ignoreTestFailures") ?: false)
+    setIgnoreExitValue(kotlinBuildProperties.ignoreTestFailures)
 
     dependsOn(npmInstall, "test")
 
diff --git a/libraries/stdlib/js-ir/build.gradle.kts b/libraries/stdlib/js-ir/build.gradle.kts
index a8f6b911534..d7b0dc48b7d 100644
--- a/libraries/stdlib/js-ir/build.gradle.kts
+++ b/libraries/stdlib/js-ir/build.gradle.kts
@@ -350,7 +350,7 @@ val runMocha by task<NodeTask> {
     val allArgs = getArgs().toList() + listOf(testOutputFile/*, kotlinTestTestOutputFile*/)
     setArgs(allArgs)
 
-    setIgnoreExitValue(rootProject.getBooleanProperty("ignoreTestFailures") ?: false)
+    setIgnoreExitValue(kotlinBuildProperties.ignoreTestFailures)
     setWorkingDir(buildDir)
 }