diff --git a/java/execution/openapi/src/com/intellij/execution/configurations/JavaParameters.java b/java/execution/openapi/src/com/intellij/execution/configurations/JavaParameters.java
index 58cae05339ba..08f41d249a6b 100644
--- a/java/execution/openapi/src/com/intellij/execution/configurations/JavaParameters.java
+++ b/java/execution/openapi/src/com/intellij/execution/configurations/JavaParameters.java
@@ -117,6 +117,7 @@ public class JavaParameters extends SimpleJavaParameters {
     if ((classPathType & CLASSES_ONLY) == 0) {
       return;
     }
+    setDefaultCharset(project);
     configureEnumerator(OrderEnumerator.orderEntries(project).runtimeOnly(), classPathType, jdk).collectPaths(getClassPath());
   }