diff --git a/packages/babel-traverse/src/path/evaluation.js b/packages/babel-traverse/src/path/evaluation.js
index 6f63987b2a..5e89b1a2dd 100644
--- a/packages/babel-traverse/src/path/evaluation.js
+++ b/packages/babel-traverse/src/path/evaluation.js
@@ -90,8 +90,10 @@ export function evaluate(): { confident: boolean; value: any } {
       seen.set(node, item);
 
       let val = _evaluate(path);
-      item.resolved = true;
-      item.value = value;
+      if (confident) {
+        item.resolved = true;
+        item.value = val;
+      }
       return val;
     }
   }
diff --git a/packages/babel-traverse/test/evaluation.js b/packages/babel-traverse/test/evaluation.js
index ecc8c6eba7..be0d5c0f1b 100644
--- a/packages/babel-traverse/test/evaluation.js
+++ b/packages/babel-traverse/test/evaluation.js
@@ -37,4 +37,18 @@ suite("evaluation", function () {
       false
     );
   });
+
+  test("should work with repeated, indeterminate identifiers", function () {
+    assert.strictEqual(
+      getPath("var num = foo(); (num > 0 && num < 100);").get("body")[1].evaluateTruthy(),
+      undefined
+    );
+  });
+
+  test("should work with repeated, determinate identifiers", function () {
+    assert.strictEqual(
+      getPath("var num = 5; (num > 0 && num < 100);").get("body")[1].evaluateTruthy(),
+      true
+    );
+  });
 });