diff --git a/org.eclipse.tm.terminal.serial/.classpath b/org.eclipse.tm.terminal.serial/.classpath
index ce73933404a..b978e78e121 100644
--- a/org.eclipse.tm.terminal.serial/.classpath
+++ b/org.eclipse.tm.terminal.serial/.classpath
@@ -1,7 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
 	<classpathentry kind="src" path="src"/>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.4"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.4">
+		<accessrules>
+			<accessrule kind="accessible" pattern="gnu/io/**"/>
+		</accessrules>
+	</classpathentry>
 	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>