diff --git a/src/main/groovy/org/scoverage/OverallCheckTask.groovy b/src/main/groovy/org/scoverage/OverallCheckTask.groovy
index 1c623ee..3038b38 100644
--- a/src/main/groovy/org/scoverage/OverallCheckTask.groovy
+++ b/src/main/groovy/org/scoverage/OverallCheckTask.groovy
@@ -5,6 +5,7 @@ import org.gradle.api.GradleException
 import org.gradle.api.tasks.TaskAction
 
 import java.text.DecimalFormat
+import java.text.NumberFormat
 
 /**
  * Handles different types of coverage Scoverage can measure.
@@ -71,8 +72,10 @@ class OverallCheckTask extends DefaultTask {
         File reportFile = new File(reportDir ? reportDir : extension.reportDir, coverageType.fileName)
 
         try {
-            def xml = parser.parse(reportFile)
-            Double overallRate = coverageType.normalize(xml.attribute(coverageType.paramName).toDouble())
+            Node xml = parser.parse(reportFile)
+            NumberFormat nf = NumberFormat.getInstance(Locale.getDefault());
+            Double coverageValue = nf.parse(xml.attribute(coverageType.paramName) as String).doubleValue();
+            Double overallRate = coverageType.normalize(coverageValue)
             def difference = (minimumRate - overallRate)
 
             if (difference > 1e-7) {
diff --git a/src/test/groovy/org/scoverage/AcceptanceTestUtils.groovy b/src/test/groovy/org/scoverage/AcceptanceTestUtils.groovy
index 320bfca..dff1f0f 100644
--- a/src/test/groovy/org/scoverage/AcceptanceTestUtils.groovy
+++ b/src/test/groovy/org/scoverage/AcceptanceTestUtils.groovy
@@ -5,6 +5,8 @@ import org.gradle.tooling.GradleConnector
 import org.hamcrest.core.Is
 import org.junit.Assert
 
+import java.text.NumberFormat
+
 /**
  * Some utils for easy acceptance testing.
  */
@@ -38,6 +40,8 @@ class AcceptanceTestUtils {
     protected Double coverage(File reportDir, CoverageType coverageType) {
         File reportFile = new File(reportDir, coverageType.fileName)
         def xml = parser.parse(reportFile)
-        xml.attribute(coverageType.paramName).toDouble()
+        println("reportfile path: ${reportFile.absolutePath}")
+        NumberFormat nf = NumberFormat.getInstance(Locale.getDefault());
+        nf.parse(xml.attribute(coverageType.paramName) as String).doubleValue();
     }
 }
diff --git a/src/test/groovy/org/scoverage/OverallCheckTaskTest.groovy b/src/test/groovy/org/scoverage/OverallCheckTaskTest.groovy
index 7daeeb2..5ba4abf 100644
--- a/src/test/groovy/org/scoverage/OverallCheckTaskTest.groovy
+++ b/src/test/groovy/org/scoverage/OverallCheckTaskTest.groovy
@@ -5,6 +5,10 @@ import org.gradle.api.Project
 import org.gradle.testfixtures.ProjectBuilder
 import org.hamcrest.Description
 import org.hamcrest.TypeSafeMatcher
+import org.junit.After
+import org.junit.AfterClass
+import org.junit.Before
+import org.junit.BeforeClass
 import org.junit.Rule
 import org.junit.Test
 import org.junit.rules.ExpectedException
@@ -37,6 +41,17 @@ class CauseMatcher extends TypeSafeMatcher<Throwable> {
 }
 
 class OverallCheckTaskTest {
+    private static Locale defaultLocale
+    @BeforeClass
+    public static void setup() {
+        defaultLocale = Locale.getDefault()
+        Locale.setDefault(Locale.US)
+    }
+
+    @AfterClass
+    public static void tearDown() {
+        Locale.setDefault(defaultLocale)
+    }
 
     @Rule
     public ExpectedException expectedException = ExpectedException.none()