diff --git a/.vscode/tasks.json b/.vscode/tasks.json
deleted file mode 100644
index 62016596..00000000
--- a/.vscode/tasks.json
+++ /dev/null
@@ -1,18 +0,0 @@
-{
-    // See https://go.microsoft.com/fwlink/?LinkId=733558 
-    // for the documentation about the tasks.json format
-    "version": "2.0.0",
-    "tasks": [
-        {
-            "type": "cargo",
-            "subcommand": "test",
-            "problemMatcher": [
-                "$rustc"
-            ],
-            "group": {
-                "kind": "build",
-                "isDefault": true
-            }
-        }
-    ]
-}
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
index eea9dff9..cd882a0a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -137,19 +137,11 @@ mod tests {
     fn test_eval() {
         start_R();
         unsafe {
-            // In an ideal world, we would do the following.
-            //   let res = R_ParseEvalString(cstr!("1"), R_NilValue);
-            // But R_ParseEvalString is only in recent packages.
-
-            let s = Rf_protect(Rf_mkString(cstr!("1")));
-            let mut status: ParseStatus = 0;
-            let status_ptr = &mut status as *mut ParseStatus;
-            let ps = Rf_protect(R_ParseVector(s, -1, status_ptr, R_NilValue));
-            let val = Rf_eval(VECTOR_ELT(ps, 0), R_GlobalEnv);
+            let val = Rf_protect(R_ParseEvalString(cstr!("1"), R_NilValue));
             Rf_PrintValue(val);
             assert_eq!(TYPEOF(val) as u32, REALSXP);
             assert_eq!(*REAL(val), 1.);
-            Rf_unprotect(2);
+            Rf_unprotect(1);
         }
     }
 }