diff --git a/EDK2/build.sh b/EDK2/build.sh
index c802f849..92244db3 100644
--- a/EDK2/build.sh
+++ b/EDK2/build.sh
@@ -35,6 +35,7 @@ rm -f $DST_PATH2
 rm -f $VTEFI_PATH3
 [ -d ../../VDiskChain ] && rm -f $DST_PATH3
 
+unset WORKSPACE
 source ./edksetup.sh
 
 if [ "$EDKARCH" = "AARCH64" ]; then    
diff --git a/EDK2/buildedk.sh b/EDK2/buildedk.sh
index ee6a5d2c..e001303b 100644
--- a/EDK2/buildedk.sh
+++ b/EDK2/buildedk.sh
@@ -2,7 +2,7 @@
 
 rm -rf edk2-edk2-stable201911
 
-unzip edk2-edk2-stable201911.zip
+unzip edk2-edk2-stable201911.zip > /dev/null
 
 /bin/cp -a ./edk2_mod/edk2-edk2-stable201911  ./