diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2e46159feb..bef02d763c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -117,9 +117,9 @@ jobs:
       - name: Test time functions in a timezone using daylight saving (Europe/Paris)
         run: TZ=Europe/Paris ./v test vlib/time/
       - name: Build examples
-        run: ./v build-examples
+        run: ./v -W build-examples
       - name: Test building v tools
-        run: ./v build-tools
+        run: ./v -W build-tools
       - name: Test v binaries
         run: ./v build-vbinaries
       - name: Test v tutorials
diff --git a/cmd/tools/vtest-all.v b/cmd/tools/vtest-all.v
index 072824afcb..293ba5fcd6 100644
--- a/cmd/tools/vtest-all.v
+++ b/cmd/tools/vtest-all.v
@@ -70,11 +70,11 @@ fn get_all_commands() []Command {
 		okmsg: 'There are no _test.v file regressions.'
 	}
 	res << Command{
-		line: '$vexe $vargs -progress build-tools'
+		line: '$vexe $vargs -progress -W build-tools'
 		okmsg: 'All tools can be compiled.'
 	}
 	res << Command{
-		line: '$vexe $vargs -progress build-examples'
+		line: '$vexe $vargs -progress -W build-examples'
 		okmsg: 'All examples can be compiled.'
 	}
 	res << Command{
diff --git a/examples/vweb/vweb_assets/vweb_assets.v b/examples/vweb/vweb_assets/vweb_assets.v
index 5e00b8fae1..b2a9a3893f 100644
--- a/examples/vweb/vweb_assets/vweb_assets.v
+++ b/examples/vweb/vweb_assets/vweb_assets.v
@@ -1,7 +1,7 @@
 module main
 
 import vweb
-import vweb.assets
+//import vweb.assets
 import time
 
 const (