diff --git a/compiler/fir/resolve/testData/resolve/stdlib/problems/weakHashMap.kt b/compiler/fir/resolve/testData/resolve/stdlib/problems/weakHashMap.kt
new file mode 100644
index 00000000000..0c028cadf13
--- /dev/null
+++ b/compiler/fir/resolve/testData/resolve/stdlib/problems/weakHashMap.kt
@@ -0,0 +1,10 @@
+// FULL_JDK
+
+import java.util.*
+
+val someMap = WeakHashMap<Any?, Any?>()
+
+fun foo() {
+    <!AMBIGUITY!>someMap[""]<!>
+}
+
diff --git a/compiler/fir/resolve/testData/resolve/stdlib/problems/weakHashMap.txt b/compiler/fir/resolve/testData/resolve/stdlib/problems/weakHashMap.txt
new file mode 100644
index 00000000000..a1f45ce9e1e
--- /dev/null
+++ b/compiler/fir/resolve/testData/resolve/stdlib/problems/weakHashMap.txt
@@ -0,0 +1,6 @@
+FILE: weakHashMap.kt
+    public final val someMap: R|java/util/WeakHashMap<kotlin/Any?, kotlin/Any?>| = R|java/util/WeakHashMap.WeakHashMap|<R|kotlin/Any?|, R|kotlin/Any?|>()
+        public get(): R|java/util/WeakHashMap<kotlin/Any?, kotlin/Any?>|
+    public final fun foo(): R|kotlin/Unit| {
+        R|/someMap|.<Ambiguity: get, [java/util/WeakHashMap.get, kotlin/collections/Map.get]>#(String())
+    }
diff --git a/compiler/fir/resolve/tests/org/jetbrains/kotlin/fir/FirDiagnosticsWithStdlibTestGenerated.java b/compiler/fir/resolve/tests/org/jetbrains/kotlin/fir/FirDiagnosticsWithStdlibTestGenerated.java
index dcaae0ff01b..2a3cb8dd876 100644
--- a/compiler/fir/resolve/tests/org/jetbrains/kotlin/fir/FirDiagnosticsWithStdlibTestGenerated.java
+++ b/compiler/fir/resolve/tests/org/jetbrains/kotlin/fir/FirDiagnosticsWithStdlibTestGenerated.java
@@ -591,5 +591,10 @@ public class FirDiagnosticsWithStdlibTestGenerated extends AbstractFirDiagnostic
         public void testTryWithLambdaInside() throws Exception {
             runTest("compiler/fir/resolve/testData/resolve/stdlib/problems/tryWithLambdaInside.kt");
         }
+
+        @TestMetadata("weakHashMap.kt")
+        public void testWeakHashMap() throws Exception {
+            runTest("compiler/fir/resolve/testData/resolve/stdlib/problems/weakHashMap.kt");
+        }
     }
 }