diff --git a/libsolidity/ast/AST.cpp b/libsolidity/ast/AST.cpp
index bc8657126..657719340 100644
--- a/libsolidity/ast/AST.cpp
+++ b/libsolidity/ast/AST.cpp
@@ -30,7 +30,9 @@
 #include <libsolutil/FunctionSelector.h>
 #include <libsolutil/Keccak256.h>
 
+#include <range/v3/range/conversion.hpp>
 #include <range/v3/view/tail.hpp>
+#include <range/v3/view/zip.hpp>
 
 #include <boost/algorithm/string.hpp>
 
@@ -367,6 +369,11 @@ TypeDeclarationAnnotation& UserDefinedValueTypeDefinition::annotation() const
 	return initAnnotation<TypeDeclarationAnnotation>();
 }
 
+std::vector<std::pair<ASTPointer<IdentifierPath>, std::optional<Token>>> UsingForDirective::functionsAndOperators() const
+{
+	return ranges::zip_view(m_functionsOrLibrary, m_operators) | ranges::to<vector>;
+}
+
 Type const* StructDefinition::type() const
 {
 	solAssert(annotation().recursive.has_value(), "Requested struct type before DeclarationTypeChecker.");
diff --git a/libsolidity/ast/AST.h b/libsolidity/ast/AST.h
index fccacce1e..7c22f1811 100644
--- a/libsolidity/ast/AST.h
+++ b/libsolidity/ast/AST.h
@@ -38,7 +38,6 @@
 #include <json/json.h>
 
 #include <range/v3/view/subrange.hpp>
-#include <range/v3/view/zip.hpp>
 #include <range/v3/view/map.hpp>
 
 #include <memory>
@@ -692,7 +691,7 @@ public:
 
 	/// @returns a list of functions or the single library.
 	std::vector<ASTPointer<IdentifierPath>> const& functionsOrLibrary() const { return m_functionsOrLibrary; }
-	auto functionsAndOperators() const { return ranges::zip_view(m_functionsOrLibrary, m_operators); }
+	std::vector<std::pair<ASTPointer<IdentifierPath>, std::optional<Token>>> functionsAndOperators() const;
 	bool usesBraces() const { return m_usesBraces; }
 	bool global() const { return m_global; }
 
diff --git a/libsolidity/ast/ASTJsonExporter.cpp b/libsolidity/ast/ASTJsonExporter.cpp
index 23aa0903f..d3815b37d 100644
--- a/libsolidity/ast/ASTJsonExporter.cpp
+++ b/libsolidity/ast/ASTJsonExporter.cpp
@@ -345,10 +345,10 @@ bool ASTJsonExporter::visit(UsingForDirective const& _node)
 	}
 	else
 	{
+		auto const& functionAndOperators = _node.functionsAndOperators();
 		solAssert(_node.functionsAndOperators().size() == 1);
-		auto const& functionAndOperator = _node.functionsAndOperators().front();
-		solAssert(!functionAndOperator.second.has_value());
-		attributes.emplace_back("libraryName", toJson(*(functionAndOperator.first)));
+		solAssert(!functionAndOperators.front().second.has_value());
+		attributes.emplace_back("libraryName", toJson(*(functionAndOperators.front().first)));
 	}
 	attributes.emplace_back("global", _node.global());