diff --git a/dnn/download_model.sh b/dnn/download_model.sh
index 75108e33f..de46d0432 100755
--- a/dnn/download_model.sh
+++ b/dnn/download_model.sh
@@ -27,4 +27,4 @@ fi
 
 
 
-tar xvomf $model
+tar xvzomf $model
diff --git a/tests/opus_build_test.sh b/tests/opus_build_test.sh
index 573f44731..f3c659f81 100755
--- a/tests/opus_build_test.sh
+++ b/tests/opus_build_test.sh
@@ -6,7 +6,7 @@ oldvectors=`realpath "$3"`
 newvectors=`realpath "$4"`
 base=`basename "$tarball" .tar.gz`
 
-tar xvf "$tarball" > /dev/null 2>&1
+tar xvzf "$tarball" > /dev/null 2>&1
 cd "$base"
 
 if [ $? -ne 0 ]