diff --git a/src/libexpr/eval-cache.cc b/src/libexpr/eval-cache.cc
index 6b3c27fd5..6a2e775d0 100644
--- a/src/libexpr/eval-cache.cc
+++ b/src/libexpr/eval-cache.cc
@@ -306,7 +306,7 @@ struct AttrDb
             case AttrType::Bool:
                 return {{rowId, queryAttribute.getInt(2) != 0}};
             case AttrType::Int:
-                return {{rowId, (int_t) queryAttribute.getInt(2)}};
+                return {{rowId, int_t{queryAttribute.getInt(2)}}};
             case AttrType::ListOfStrings:
                 return {{rowId, tokenizeString<std::vector<std::string>>(queryAttribute.getStr(2), "\t")}};
             case AttrType::Missing:
@@ -447,7 +447,7 @@ Value & AttrCursor::forceValue()
         else if (v.type() == nBool)
             cachedValue = {root->db->setBool(getKey(), v.boolean), v.boolean};
         else if (v.type() == nInt)
-            cachedValue = {root->db->setInt(getKey(), v.integer), v.integer};
+            cachedValue = {root->db->setInt(getKey(), v.integer), int_t{v.integer}};
         else if (v.type() == nAttrs)
             ; // FIXME: do something?
         else
@@ -651,7 +651,7 @@ NixInt AttrCursor::getInt()
         if (cachedValue && !std::get_if<placeholder_t>(&cachedValue->second)) {
             if (auto i = std::get_if<int_t>(&cachedValue->second)) {
                 debug("using cached Integer attribute '%s'", getAttrPathStr());
-                return (*i).x;
+                return i->x;
             } else
                 throw TypeError("'%s' is not an Integer", getAttrPathStr());
         }
diff --git a/src/libexpr/eval-cache.hh b/src/libexpr/eval-cache.hh
index 68b5952eb..c93e55b93 100644
--- a/src/libexpr/eval-cache.hh
+++ b/src/libexpr/eval-cache.hh
@@ -52,7 +52,7 @@ struct placeholder_t {};
 struct missing_t {};
 struct misc_t {};
 struct failed_t {};
-struct int_t { NixInt x; int_t(NixInt x) : x(x) {}; };
+struct int_t { NixInt x; };
 typedef uint64_t AttrId;
 typedef std::pair<AttrId, Symbol> AttrKey;
 typedef std::pair<std::string, NixStringContext> string_t;