diff --git a/bucket/msmpi.json b/bucket/msmpi.json
index a85b80eca9..be91c9b25f 100644
--- a/bucket/msmpi.json
+++ b/bucket/msmpi.json
@@ -6,12 +6,12 @@
     "url": "https://github.com/Microsoft/Microsoft-MPI/releases/download/v10.1.1/msmpisetup.exe",
     "hash": "7308fd15e437d6829fd9c6ec5d801380faa3bff6e66e1dee3e8e005106fb6a68",
     "env_add_path": ".",
-    "pre_install": "7z x -t# \"$dir\\msmpisetup.exe\" -o\"$dir\\tmp\"",
+    "pre_install": "Invoke-ExternalCommand -Path \"$(Get-HelperPath -Helper 7zip)\" -ArgumentList @('x', '-t#', \"`\"$dir\\msmpisetup.exe`\"\", \"-o`\"$dir\\tmp`\"\")",
     "architecture": {
         "64bit": {
             "installer": {
                 "script": [
-                    "7z x -r \"$dir\\tmp\\4.msi\" -o\"$dir\"",
+                    "Expand-7zipArchive \"$dir\\tmp\\4.msi\" \"$dir\"",
                     "Remove-Item \"$dir\\msmpires.dll\"",
                     "Remove-Item \"$dir\\msmpi.dll\"",
                     "Rename-Item \"$dir\\msmpires64.dll\" \"$dir\\msmpires.dll\"",
@@ -21,7 +21,7 @@
         },
         "32bit": {
             "installer": {
-                "script": "7z x \"$dir\\tmp\\2.msi\" -o\"$dir\""
+                "script": "Expand-7zipArchive \"$dir\\tmp\\2.msi\" \"$dir\""
             }
         }
     },