diff --git a/blocker.js b/blocker.js
index bb485e7..c9b206e 100644
--- a/blocker.js
+++ b/blocker.js
@@ -10,8 +10,14 @@ util.inherits(Blocker, Transform)
 
 Blocker.prototype.block = function (size, callback) {
     ok(!this._next, 'size already set')
-    this._next = { size: size, callback: callback }
-    this._consume()
+    if (this._error) {
+        var error = this._error
+        delete this._error
+        callback(error)
+    } else {
+        this._next = { size: size, callback: callback }
+        this._consume()
+    }
 }
 
 Blocker.prototype._read = function () {
@@ -37,6 +43,8 @@ Blocker.prototype.interrupt = function (error) {
         var callback = this._next.callback
         delete this._next
         callback(error)
+    } else {
+        this._error = error
     }
 }
 
diff --git a/t/blocker/block.t.js b/t/blocker/block.t.js
index e980586..a463e7e 100644
--- a/t/blocker/block.t.js
+++ b/t/blocker/block.t.js
@@ -1,4 +1,4 @@
-require('proof')(3, prove)
+require('proof')(4, prove)
 
 function prove (assert) {
     var Blocker = require('../..')
@@ -17,7 +17,11 @@ function prove (assert) {
     })
     pipe.write(buffer.slice(1))
 
-    blocker.interrupt(new Error)
+    blocker.interrupt(new Error('interrupt'))
+
+    blocker.block(16, function (error) {
+        assert(error.message, 'interrupt', 'interrupt')
+    })
 
     blocker.block(16, function (error) {
         assert(error.message, 'interrupt', 'interrupt')