diff --git a/luatest/capture.lua b/luatest/capture.lua
index 7899b94..416fb6a 100644
--- a/luatest/capture.lua
+++ b/luatest/capture.lua
@@ -137,7 +137,7 @@ function Capture.mt:wrap(enabled, fn)
         return fn()
     end, function(err)
         -- Don't re-wrap error.
-        if err.type ~= self.class.CAPTURED_ERROR_TYPE then
+        if type(err) ~= 'table' or rawget(err, 'type') ~= self.class.CAPTURED_ERROR_TYPE then
             err = {
                 type = self.class.CAPTURED_ERROR_TYPE,
                 original = err,
diff --git a/test/capture_test.lua b/test/capture_test.lua
index e205a08..394ad7c 100644
--- a/test/capture_test.lua
+++ b/test/capture_test.lua
@@ -111,6 +111,36 @@ g.test_wrap_with_error = function()
     t.assert_equals(capture:flush(), {stdout = '', stderr = ''})
 end
 
+g.test_wrap_with_boolean_error = function()
+    local test_capture = Capture:new()
+    assert(not test_capture.enabled)
+    local ok, err = pcall(function() test_capture:wrap(true, function()
+        assert(test_capture.enabled)
+        error(true)
+    end) end)
+    t.assert_equals(ok, false)
+    assert(not test_capture.enabled)
+    t.assert_is(err.original, true)
+	  t.assert_str_contains(err.traceback, "true")
+    t.assert_equals(test_capture:flush(), {stdout = '', stderr = ''})
+    t.assert_equals(capture:flush(), {stdout = '', stderr = ''})
+end
+
+g.test_wrap_with_errorable__index_error = function()
+    local test_capture = Capture:new()
+    assert(not test_capture.enabled)
+    local ok, err = pcall(function() test_capture:wrap(true, function()
+        assert(test_capture.enabled)
+        error(setmetatable({"error"}, {__index = error}))
+    end) end)
+    t.assert_equals(ok, false)
+    assert(not test_capture.enabled)
+	  t.assert_is(err.original[1], "error")
+	  t.assert_str_contains(err.traceback, "error")
+    t.assert_equals(test_capture:flush(), {stdout = '', stderr = ''})
+    t.assert_equals(capture:flush(), {stdout = '', stderr = ''})
+end
+
 g.test_wrap_disabled_with_error = function()
     local test_capture = Capture:new()
     assert(not test_capture.enabled)