diff --git a/releases/specs/ia64/installcd-stage2-minimal.spec b/releases/specs/ia64/installcd-stage2-minimal.spec
index 284b7256..46c74868 100644
--- a/releases/specs/ia64/installcd-stage2-minimal.spec
+++ b/releases/specs/ia64/installcd-stage2-minimal.spec
@@ -5,7 +5,6 @@ rel_type: default
 profile: default/linux/ia64/17.0
 snapshot: @TIMESTAMP@
 source_subpath: default/livecd-stage1-ia64-@TIMESTAMP@
-compression_mode: pixz
 portage_confdir: @REPO_DIR@/releases/portage/isos
 
 livecd/bootargs: dokeymap
diff --git a/releases/specs/ppc/ppc64le/installcd-stage2-minimal.spec b/releases/specs/ppc/ppc64le/installcd-stage2-minimal.spec
index 8d73ccd4..5a610b3a 100644
--- a/releases/specs/ppc/ppc64le/installcd-stage2-minimal.spec
+++ b/releases/specs/ppc/ppc64le/installcd-stage2-minimal.spec
@@ -5,7 +5,6 @@ rel_type: default
 profile: default/linux/ppc64le/17.0
 snapshot: @TIMESTAMP@
 source_subpath: default/livecd-stage1-ppc64le-@TIMESTAMP@
-compression_mode: pixz
 portage_confdir: @REPO_DIR@/releases/portage/isos
 
 livecd/bootargs: dokeymap