diff --git a/_constraints b/_constraints
new file mode 100644
index 0000000..d0f11ec
--- /dev/null
+++ b/_constraints
@@ -0,0 +1,10 @@
+<constraints>
+  <hardware>
+    <physicalmemory>
+      <size unit="G">3</size>
+    </physicalmemory>
+    <disk>
+      <size unit="G">3</size>
+    </disk>
+  </hardware>
+</constraints> 
diff --git a/scala.changes b/scala.changes
index 8d3107d..b0c497a 100644
--- a/scala.changes
+++ b/scala.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri Dec 13 11:11:24 UTC 2019 - Guillaume GARDET <guillaume.gardet@opensuse.org>
+
+- Add _constraints to avoid long builds because of swapping
+
 -------------------------------------------------------------------
 Wed Dec  4 09:21:06 UTC 2019 - Dominique Leuenberger <dimstar@opensuse.org>
 
diff --git a/scala.spec b/scala.spec
index 1f8ca23..bb9f852 100644
--- a/scala.spec
+++ b/scala.spec
@@ -110,8 +110,8 @@ reference and API documentation for the Scala programming language.
 %package swing
 Summary:        The swing library for the Scala programming languages
 Group:          Development/Libraries/Java
-Requires:       java >= 1.7
 Requires:       %{name} = %{version}-%{release}
+Requires:       java >= 1.7
 %if %{without bootstrap}
 Obsoletes:      %{base_name}-bootstrap-swing
 %endif