diff --git a/_constraints b/_constraints
index 76030a9..3f1bd93 100644
--- a/_constraints
+++ b/_constraints
@@ -7,5 +7,8 @@
     <memory>
       <size unit="G">8</size>
     </memory>
+    <memoryperjob>
+      <size unit="M">1300</size>
+    </memoryperjob>
   </hardware>
 </constraints>
diff --git a/qgis.changes b/qgis.changes
index 2515353..5478a71 100644
--- a/qgis.changes
+++ b/qgis.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Aug 20 09:04:43 UTC 2020 - Martin Liška <mliska@suse.cz>
+
+- Use memoryperjob constraint instead of %limit_build macro.
+
 -------------------------------------------------------------------
 Tue Jul  7 16:58:27 UTC 2020 - Michel Normand <normand@linux.vnet.ibm.com>
 
diff --git a/qgis.spec b/qgis.spec
index 8a8e771..7de2d7a 100644
--- a/qgis.spec
+++ b/qgis.spec
@@ -140,7 +140,6 @@ Obsoletes:      qgis2
 BuildRequires:  grass-devel >= 7.2
 %endif
 %ifarch ppc64le
-BuildRequires:  memory-constraints
 %endif
 
 %package devel
@@ -224,7 +223,6 @@ export QTDIR=%{_prefix}
 export PATH=$PATH:$QTDIR/bin
 %ifarch ppc64le
 # avoid OOM failure on power8-01 builder
-%limit_build -m 1300
 %endif
 %make_jobs