diff --git a/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newLambda/IDEA144840.java b/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newLambda/IDEA144840.java
new file mode 100644
index 000000000000..9b261d2da2c8
--- /dev/null
+++ b/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newLambda/IDEA144840.java
@@ -0,0 +1,34 @@
+
+import java.math.BigDecimal;
+import java.util.Map;
+import java.util.Optional;
+import java.util.function.BiFunction;
+import java.util.stream.Stream;
+
+class Test {
+  private Map<Pair<String, Number>, BiFunction<Number, Object, BigDecimal>> spec = null;
+
+  public Optional<BigDecimal> fooIn2(Map<String, Optional<Object>> values) {
+    return values.entrySet().stream().map(entry -> {
+      String pathName = entry.getKey();
+      return entry.getValue().flatMap(value ->
+                                        spec.entrySet().stream().filter(specEntry ->
+                                                                          pathName.equals(specEntry.getKey().getLeft())).findFirst().map(specEntry -> {
+                                          Pair<String, Number> specEntryKey = specEntry.getKey();
+                                          Number path = specEntryKey.getRight();
+                                          BiFunction<Number, Object, BigDecimal> compareFunction = specEntry.getValue();
+                                          return compareFunction.apply(path, value);
+                                        }));
+    }).flatMap(option -> option.map(Stream::of).orElse(Stream.empty())).reduce(BigDecimal::add);
+  }
+
+  static class Pair<A, B> {
+    public A getLeft() {
+      return null;
+    }
+
+    public B getRight() {
+      return null;
+    }
+  }
+}
diff --git a/java/java-tests/testSrc/com/intellij/codeInsight/daemon/lambda/NewLambdaHighlightingTest.java b/java/java-tests/testSrc/com/intellij/codeInsight/daemon/lambda/NewLambdaHighlightingTest.java
index 2c5bea8ba62a..33242381ec35 100644
--- a/java/java-tests/testSrc/com/intellij/codeInsight/daemon/lambda/NewLambdaHighlightingTest.java
+++ b/java/java-tests/testSrc/com/intellij/codeInsight/daemon/lambda/NewLambdaHighlightingTest.java
@@ -228,6 +228,10 @@ public class NewLambdaHighlightingTest extends LightDaemonAnalyzerTestCase {
     doTest();
   }
 
+  public void testIDEA144840() throws Exception {
+    doTest();
+  }
+
   private void doTest() {
     doTest(false);
   }