diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c377462845..af6a6ed6d7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -159,17 +159,17 @@ jobs:
         run: ./v -gc boehm -silent test-self
       - name: Test leak detector
         run: |
-          ./v -gc boehm_leak -o testcase_leak vlib/v/tests/testcase_leak.v
+          ./v -gc boehm_leak -o testcase_leak vlib/v/tests/testcase_leak.vv
           ./testcase_leak 2>leaks.txt
           grep "Found 1 leaked object" leaks.txt && grep ", sz=1000," leaks.txt
       - name: Test leak detector not being active for `-gc boehm`
         run: |
-          ./v -gc boehm -o testcase_leak vlib/v/tests/testcase_leak.v
+          ./v -gc boehm -o testcase_leak vlib/v/tests/testcase_leak.vv
           ./testcase_leak 2>leaks.txt
           [ "$(stat -c %s leaks.txt)" = "0" ]
       - name: Test leak detector not being active for normal compile
         run: |
-          ./v -o testcase_leak vlib/v/tests/testcase_leak.v
+          ./v -o testcase_leak vlib/v/tests/testcase_leak.vv
           ./testcase_leak 2>leaks.txt
           [ "$(stat -c %s leaks.txt)" = "0" ]
 
diff --git a/vlib/v/tests/testcase_leak.v b/vlib/v/tests/testcase_leak.vv
similarity index 100%
rename from vlib/v/tests/testcase_leak.v
rename to vlib/v/tests/testcase_leak.vv