diff --git a/powershell/ql/lib/qlpack.yml b/powershell/ql/lib/qlpack.yml
index 5522b6f7d3f..28385cb7c15 100644
--- a/powershell/ql/lib/qlpack.yml
+++ b/powershell/ql/lib/qlpack.yml
@@ -5,4 +5,5 @@ groups:
   - microsoft-all
 dbscheme: semmlecode.powershell.dbscheme
 extractor: powershell
-library: true
\ No newline at end of file
+library: true
+warnOnImplicitThis: true
\ No newline at end of file
diff --git a/powershell/ql/test/qlpack.yml b/powershell/ql/test/qlpack.yml
index c60137dd510..ccd69e233fe 100644
--- a/powershell/ql/test/qlpack.yml
+++ b/powershell/ql/test/qlpack.yml
@@ -5,4 +5,5 @@ groups:
 dependencies:
   microsoft-sdl/powershell-all: ${workspace}
 extractor: powershell
-tests: .
\ No newline at end of file
+tests: .
+warnOnImplicitThis: true
\ No newline at end of file