diff --git a/_constraints b/_constraints
new file mode 100644
index 0000000..5e7b8fb
--- /dev/null
+++ b/_constraints
@@ -0,0 +1,14 @@
+<constraints>
+  <overwrite>
+    <conditions>
+      <arch>ppc64</arch>
+      <arch>ppc64le</arch>
+    </conditions>
+    <hardware>
+      <disk>
+        <size unit="G">4</size>
+      </disk>
+    </hardware>
+  </overwrite>
+</constraints>
+
diff --git a/gimp-help.changes b/gimp-help.changes
index 0e932d9..ddd06d5 100644
--- a/gimp-help.changes
+++ b/gimp-help.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Oct  3 12:23:32 UTC 2019 - Michel Normand <normand@linux.vnet.ibm.com>
+
+- Add _constraints for ppc64/ppc64le as build failed with 3.5G disk
+
 -------------------------------------------------------------------
 Fri Sep 27 11:25:30 UTC 2019 - Dominique Leuenberger <dimstar@opensuse.org>
 
diff --git a/gimp-help.spec b/gimp-help.spec
index 707139e..3e83528 100644
--- a/gimp-help.spec
+++ b/gimp-help.spec
@@ -32,7 +32,7 @@ BuildRequires:  libxslt
 BuildRequires:  xhtml-dtd
 BuildRequires:  xmlcharent
 BuildRequires: 	pngcrush
-BuildRequires:	python2-libxml2
+BuildRequires:	python-libxml2
 Requires:       gimp
 Enhances:       gimp
 Provides:       gimp-help-2