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-rw-r--r--tvix/eval/src/value/mod.rs3
1 files changed, 2 insertions, 1 deletions
diff --git a/tvix/eval/src/value/mod.rs b/tvix/eval/src/value/mod.rs
index fd5b5255c5d8..3791aaf56b9b 100644
--- a/tvix/eval/src/value/mod.rs
+++ b/tvix/eval/src/value/mod.rs
@@ -163,7 +163,8 @@ impl Value {
                         let call_to_string = |value: &Value, vm: &mut VM| {
                             // Leave self on the stack as an argument to the function call.
                             vm.push(self.clone());
-                            let result = vm.call_value(value)?;
+                            vm.call_value(value)?;
+                            let result = vm.pop();
 
                             match result {
                                 Value::String(s) => Ok(s),