diff --git a/lib/babylon-to-espree/toToken.js b/lib/babylon-to-espree/toToken.js
index 9c5a49ef..082aef3e 100644
--- a/lib/babylon-to-espree/toToken.js
+++ b/lib/babylon-to-espree/toToken.js
@@ -38,7 +38,8 @@ module.exports = function(token, tt, source) {
     type === tt.plusMin ||
     type === tt.modulo ||
     type === tt.exponent ||
-    type === tt.prefix ||
+    type === tt.bang ||
+    type === tt.tilde ||
     type === tt.doubleColon ||
     type.isAssign
   ) {
diff --git a/test/babel-eslint.js b/test/babel-eslint.js
index db1b5222..c066ed28 100644
--- a/test/babel-eslint.js
+++ b/test/babel-eslint.js
@@ -48,12 +48,6 @@ function parseAndAssertSame(code) {
     assertImplementsAST(esAST, babylonAST);
   } catch (err) {
     var traversal = err.message.slice(3, err.message.indexOf(":"));
-    if (esAST.tokens) {
-      delete esAST.tokens;
-    }
-    if (babylonAST.tokens) {
-      delete babylonAST.tokens;
-    }
     err.message += unpad(`
       espree:
       ${util.inspect(lookup(esAST, traversal, 2), {
@@ -170,6 +164,14 @@ describe("babylon-to-espree", () => {
     parseAndAssertSame("a = 1");
   });
 
+  it("logical NOT", () => {
+    parseAndAssertSame("!0");
+  });
+
+  it("bitwise NOT", () => {
+    parseAndAssertSame("~0");
+  });
+
   it("class declaration", () => {
     parseAndAssertSame("class Foo {}");
   });