diff --git a/.coveragerc b/.coveragerc
index 41fbb87e6..db75342cc 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -1,5 +1,5 @@
 [run]
-branch = true
+#branch = true
 source =
   xonsh/
   xontrib/
diff --git a/run-tests.xsh b/run-tests.xsh
index 52185b555..ae5bdbbd8 100755
--- a/run-tests.xsh
+++ b/run-tests.xsh
@@ -45,6 +45,7 @@ def test(
     """
 
     if report_cov:
+        $COVERAGE_CORE="sysmon"
         ![pytest @(_replace_args(pytest_args, 0)) --cov --cov-report=xml --cov-report=term]
     else:
         # during CI run, some tests take longer to complete on windows