diff --git a/_constraints b/_constraints
new file mode 100644
index 0000000..fb5db1f
--- /dev/null
+++ b/_constraints
@@ -0,0 +1,8 @@
+<constraints>
+  <hardware>
+    <disk>
+      <!-- for fileRoundTripTest: ./datagen -g4193M -->
+      <size unit="G">6</size>
+    </disk>
+  </hardware>
+</constraints>
diff --git a/zstd.changes b/zstd.changes
index e1e41e8..2feaeb3 100644
--- a/zstd.changes
+++ b/zstd.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Jul 30 13:43:02 UTC 2019 - Bernhard Wiedemann <bwiedemann@suse.com>
+
+- Add disk _constraints to fix ppc64le build
+
 -------------------------------------------------------------------
 Fri Jul 26 13:06:18 UTC 2019 - Bernhard Wiedemann <bwiedemann@suse.com>