diff --git a/_constraints b/_constraints
new file mode 100644
index 0000000..ac87364
--- /dev/null
+++ b/_constraints
@@ -0,0 +1,8 @@
+<?xml version="1.0"?>
+<constraints>
+  <hardware>
+    <memory>
+      <size unit="M">6000</size>
+    </memory>
+  </hardware>
+</constraints>
diff --git a/widelands.changes b/widelands.changes
index a1c0773..03769af 100644
--- a/widelands.changes
+++ b/widelands.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Oct  9 08:25:07 UTC 2018 - Guillaume GARDET <guillaume.gardet@opensuse.org>
+
+- Add _constraints to avoid OOM erros while linking
+
 -------------------------------------------------------------------
 Mon Jun 18 05:46:38 UTC 2018 - antoine.belvire@opensuse.org
 
diff --git a/widelands.spec b/widelands.spec
index dc5ee69..611a0fc 100644
--- a/widelands.spec
+++ b/widelands.spec
@@ -12,7 +12,7 @@
 # license that conforms to the Open Source Definition (Version 1.9)
 # published by the Open Source Initiative.
 
-# Please submit bugfixes or comments via http://bugs.opensuse.org/
+# Please submit bugfixes or comments via https://bugs.opensuse.org/
 #