diff --git a/_constraints b/_constraints
index 6b9e418..f5c87e1 100644
--- a/_constraints
+++ b/_constraints
@@ -1,7 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <constraints>
   <hardware>
     <physicalmemory>
       <size unit="G">16</size>
     </physicalmemory>
+    <memoryperjob>
+      <size unit="M">2048</size>
+    </memoryperjob>
   </hardware>
 </constraints>
diff --git a/telegram-desktop.changes b/telegram-desktop.changes
index 344c863..2932c9f 100644
--- a/telegram-desktop.changes
+++ b/telegram-desktop.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Aug 20 09:06:04 UTC 2020 - Martin Liška <mliska@suse.cz>
+
+- Use memoryperjob constraint instead of %limit_build macro.
+
 -------------------------------------------------------------------
 Wed Jun 24 08:38:24 UTC 2020 - Marcel Kuehlhorn <tux93@opensuse.org>
 
diff --git a/telegram-desktop.spec b/telegram-desktop.spec
index c0160b5..7c4eb47 100644
--- a/telegram-desktop.spec
+++ b/telegram-desktop.spec
@@ -61,7 +61,6 @@ BuildRequires:  libjpeg-devel
 BuildRequires:  liblz4-devel
 BuildRequires:  libqt5-qtbase-common-devel
 BuildRequires:  libqt5-qtimageformats-devel
-BuildRequires:  memory-constraints
 BuildRequires:  ninja
 BuildRequires:  pkgconfig
 BuildRequires:  xorg-x11-devel
@@ -144,7 +143,6 @@ The service also provides APIs to independent developers.
 %patch1 -p1
 
 %build
-%limit_build -m 2048
 %if %{with fixed_gcc}
 export CC=/usr/bin/gcc-9
 export CXX=/usr/bin/g++-9