diff --git a/duchain/contextbuilder.h b/duchain/contextbuilder.h
--- a/duchain/contextbuilder.h
+++ b/duchain/contextbuilder.h
@@ -139,6 +139,7 @@
 
 protected:
     // AST visitor functions
+    void visitLambda(Python::LambdaAst * node) override;
     void visitFunctionDefinition( FunctionDefinitionAst* ) override;
     void visitClassDefinition( ClassDefinitionAst* ) override;
     void visitCode(CodeAst* node) override;
diff --git a/duchain/contextbuilder.cpp b/duchain/contextbuilder.cpp
--- a/duchain/contextbuilder.cpp
+++ b/duchain/contextbuilder.cpp
@@ -395,6 +395,13 @@
     return {};
 }
 
+void ContextBuilder::visitLambda(LambdaAst* node)
+{
+    openContext(node, editorFindRange(node, node->body), DUContext::Other);
+    AstDefaultVisitor::visitLambda(node);
+    closeContext();
+}
+
 RangeInRevision ContextBuilder::rangeForArgumentsContext(FunctionDefinitionAst* node)
 {
     auto start = node->name->range().end();