diff --git a/src/libexpr/print.cc b/src/libexpr/print.cc
index 139568b5e..c04278a0e 100644
--- a/src/libexpr/print.cc
+++ b/src/libexpr/print.cc
@@ -150,7 +150,7 @@ struct ImportantFirstAttrNameCmp
     }
 };
 
-typedef std::set<Value *> ValuesSeen;
+typedef std::set<const void *> ValuesSeen;
 
 class Printer
 {
@@ -260,7 +260,7 @@ private:
 
     void printAttrs(Value & v, size_t depth)
     {
-        if (seen && !seen->insert(&v).second) {
+        if (seen && !seen->insert(v.attrs).second) {
             printRepeated();
             return;
         }
diff --git a/tests/functional/repl.sh b/tests/functional/repl.sh
index bb8b60e50..0921edc0f 100644
--- a/tests/functional/repl.sh
+++ b/tests/functional/repl.sh
@@ -161,7 +161,7 @@ testReplResponseNoRegex '
 # Same for let expressions
 testReplResponseNoRegex '
 let x = { y = { a = 1; }; inherit x; }; in x
-' '{ x = { ... }; y = { ... }; }'
+' '{ x = «repeated»; y = { ... }; }'
 
 # The :p command should recursively print sets, but prevent infinite recursion
 testReplResponseNoRegex '
@@ -176,4 +176,4 @@ testReplResponseNoRegex '
 # Same for let expressions
 testReplResponseNoRegex '
 :p let x = { y = { a = 1; }; inherit x; }; in x
-' '{ x = { x = «repeated»; y = { a = 1; }; }; y = «repeated»; }'
+' '{ x = «repeated»; y = { a = 1; }; }'