diff --git a/test/core/src/lombok/RunTestsViaDelombok.java b/test/core/src/lombok/RunTestsViaDelombok.java
index 1051cec85..8b3efc17d 100644
--- a/test/core/src/lombok/RunTestsViaDelombok.java
+++ b/test/core/src/lombok/RunTestsViaDelombok.java
@@ -112,7 +112,7 @@ public TransformationResult transformCode(final File file, TestParameters parame
 	}
 	
 	public static class NodePositionMapper extends TreeProcessor {
-		Map<JCTree, Integer> nodePositions = new HashMap<>();
+		Map<JCTree, Integer> nodePositions = new HashMap<JCTree, Integer>();
 		
 		@Override void processCompilationUnit(final JCCompilationUnit unit) {
 			unit.accept(new TreeScanner() {