diff --git a/org.eclipse.jgit.junit.http/src/org/eclipse/jgit/junit/http/AppServer.java b/org.eclipse.jgit.junit.http/src/org/eclipse/jgit/junit/http/AppServer.java
index f9f8c85..0f05298 100644
--- a/org.eclipse.jgit.junit.http/src/org/eclipse/jgit/junit/http/AppServer.java
+++ b/org.eclipse.jgit.junit.http/src/org/eclipse/jgit/junit/http/AppServer.java
@@ -181,9 +181,12 @@
 			tmpDir.deleteOnExit();
 			makePrivate(tmpDir);
 			File keyStore = new File(tmpDir, "keystore.jks");
+			File keytool = new File(
+					new File(new File(System.getProperty("java.home")), "bin"),
+					"keytool");
 			Runtime.getRuntime().exec(
 					new String[] {
-							"keytool", //
+							keytool.getAbsolutePath(), //
 							"-keystore", keyStore.getAbsolutePath(), //
 							"-storepass", keyPassword,
 							"-alias", hostName, //
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/revwalk/ReachabilityCheckerTestCase.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/revwalk/ReachabilityCheckerTestCase.java
index 1ff6e7d..7679c11 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/revwalk/ReachabilityCheckerTestCase.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/revwalk/ReachabilityCheckerTestCase.java
@@ -57,7 +57,7 @@
 		assertReachable("reachable from another tip",
 				checker.areAllReachable(Arrays.asList(a), Stream.of(b2)));
 		assertReachable("reachable from itself",
-				checker.areAllReachable(Arrays.asList(a), Stream.of(b2)));
+				checker.areAllReachable(Arrays.asList(a), Stream.of(a)));
 	}
 
 	@Test