diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b946d39a72031a7ffc20d82877bc48638833907d..082cf40cabd6767be5826b29792b879619d7e3c6 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -288,9 +288,10 @@ build-codec-windows-cmake:
     - *print-common-info-windows
     - $winoutdata = $null
     - cmake -G "Visual Studio 15 2017" . -Bbuild
-    - cmake --build build -j16 | tee -variable winoutdata
+    - cmake --build build -j | tee -variable winoutdata
     - $winoutdata | Out-File $BUILD_OUTPUT -Encoding Utf8
-    - ("& python ci/check_for_warnings.py '$BUILD_OUTPUT'", "exit $LASTEXITCODE") | Invoke-Expression
+    - ("& python ci/check_for_warnings.py '$BUILD_OUTPUT'") | Invoke-Expression
+    - ("exit $LASTEXITCODE") | Invoke-Expression
 
 build-codec-windows-msbuild:
   extends:
@@ -301,7 +302,8 @@ build-codec-windows-msbuild:
     - $winoutdata = $null
     - MSBuild.exe .\Workspace_msvc\Workspace_msvc.sln /property:Configuration=Debug | tee -variable winoutdata
     - $winoutdata | Out-File $BUILD_OUTPUT -Encoding Utf8
-    - ("& python ci/check_for_warnings.py '$BUILD_OUTPUT'", "exit $LASTEXITCODE") | Invoke-Expression
+    - ("& python ci/check_for_warnings.py '$BUILD_OUTPUT'") | Invoke-Expression
+    - ("exit $LASTEXITCODE") | Invoke-Expression
 
 # ---------------------------------------------------------------
 # Test jobs for merge requests