diff --git a/perl-LDAP.spec b/perl-LDAP.spec
index 2df9987..fa123da 100644
--- a/perl-LDAP.spec
+++ b/perl-LDAP.spec
@@ -9,7 +9,7 @@
 
 Name:           perl-LDAP
 Version:        0.66
-Release:        1%{?dist}
+Release:        2%{?dist}
 Epoch:          1
 Summary:        LDAP Perl module
 License:        GPL+ or Artistic
@@ -17,6 +17,8 @@ URL:            https://metacpan.org/release/perl-ldap
 Source0:        https://cpan.metacpan.org/authors/id/M/MA/MARSCHAP/perl-ldap-%{version}.tar.gz
 # Optional tests need to know a location of an LDAP server executable
 Patch0:         perl-ldap-0.65-Configure-usr-sbin-slapd-for-tests.patch
+# Remove an unreliable cancelling test
+Patch1:         perl-ldap-0.66-test-Remove-a-test-for-cancelling-asynchronous-calls.patch
 BuildArch:      noarch
 BuildRequires:  perl-interpreter
 BuildRequires:  perl-generators
@@ -110,6 +112,7 @@ project.
 %prep
 %setup -q -n perl-ldap-%{version}
 %patch0 -p1
+%patch1 -p1
 chmod -c 644 bin/* contrib/* lib/Net/LDAP/DSML.pm
 perl -pi -e 's|^#!/usr/local/bin/perl\b|#!%{__perl}|' contrib/*
 # Remove bundled libraries
@@ -146,6 +149,9 @@ make test
 %endif
 
 %changelog
+* Thu Apr 25 2019 Petr Pisar <ppisar@redhat.com> - 1:0.66-2
+- Remove an unreliable cancelling test
+
 * Tue Apr 16 2019 Jitka Plesnikova <jplesnik@redhat.com> - 1:0.66-1
 - 0.66 bump
 
diff --git a/perl-ldap-0.66-test-Remove-a-test-for-cancelling-asynchronous-calls.patch b/perl-ldap-0.66-test-Remove-a-test-for-cancelling-asynchronous-calls.patch
new file mode 100644
index 0000000..71b0639
--- /dev/null
+++ b/perl-ldap-0.66-test-Remove-a-test-for-cancelling-asynchronous-calls.patch
@@ -0,0 +1,65 @@
+From 5a2388c895cfd7db5f6ca1cc4acb062dfde336bf Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
+Date: Thu, 25 Apr 2019 14:23:55 +0200
+Subject: [PATCH] test: Remove a test for cancelling asynchronous calls
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+t/60cancel.t performed a racy test when it started an asynchronous query, then
+it canceled it and tested that the cancelling succeeded. However, if a server
+finished the search before the cancelling order was issued, the cancel itself
+failed because it referred an not running and thus then nonexisting query:
+
+    t/60cancel.t .. 1/7
+    #   Failed test 'cancel a running operation: 119: message ID not found'
+    #   at t/60cancel.t line 63.
+    # This test may have failed because the server was too fast
+
+The race was actually admitted in the diag message.
+
+This patch removes the unreliable test to prevent from false negatives.
+
+Signed-off-by: Petr Písař <ppisar@redhat.com>
+---
+ t/60cancel.t | 17 +----------------
+ 1 file changed, 1 insertion(+), 16 deletions(-)
+
+diff --git a/t/60cancel.t b/t/60cancel.t
+index c72bfa5..8a3074c 100644
+--- a/t/60cancel.t
++++ b/t/60cancel.t
+@@ -11,7 +11,7 @@ BEGIN { require "t/common.pl" }
+ 
+ 
+ start_server()
+-? plan tests => 7
++? plan tests => 6
+ : plan skip_all => 'no server';
+ 
+ 
+@@ -47,21 +47,6 @@ SKIP: {
+   # cancel the finished search => should fail
+   $cancel = $ldap->cancel($search);
+   ok($cancel->code, "cancel a finished operation: " . $cancel->code . ": " . $cancel->error);
+-
+-  # switch to async mode
+-  $ldap->async(1);
+-
+-  # perform a search (asynchronously)
+-  $search = $ldap->search(
+-                       base     => $BASEDN,
+-                       filter   => '(objectclass=*)',
+-                       callback => \&process_entry, # Call this sub for each entry
+-                     );
+-
+-  # cancel the running search => should work [may fail, as it depends on the server's speed]
+-  $cancel = $ldap->cancel($search);
+-  ok(!$cancel->code, "cancel a running operation: " . $cancel->code . ": " . $cancel->error)
+-    or diag("This test may have failed because the server was too fast");
+ }
+ 
+ 
+-- 
+2.20.1
+