diff --git a/.github/workflows/PSSPred.yml b/.github/workflows/PSSPred.yml
index 6804ecd..35bb11b 100644
--- a/.github/workflows/PSSPred.yml
+++ b/.github/workflows/PSSPred.yml
@@ -72,7 +72,7 @@ jobs:
          mkdir nr
          cd nr/
          wget -O nr.tar.gz https://zhanglab.ccmb.med.umich.edu/cgi-bin/download_ftp.cgi?ID=nr.tar.gz
-         tar -zxvf nr.tar.gz
+         tar -xvf nr.tar.gz
          echo "nr.tar.gz already unpacked!"
          echo "Show the path of this file: "
          pwd