diff --git a/run-tests.php b/run-tests.php
index 6e551f4bb4be6..adeb7edad7af7 100755
--- a/run-tests.php
+++ b/run-tests.php
@@ -1188,6 +1188,9 @@ function system_with_timeout($commandline, $env = null, $stdin = null, $captureS
 	}
 	if ($stat["exitcode"] > 128 && $stat["exitcode"] < 160) {
 		$data .= "\nTermsig=" . ($stat["exitcode"] - 128) . "\n";
+	} else if (defined('PHP_WINDOWS_VERSION_MAJOR') && (($stat["exitcode"] >> 28) & 0b1111) === 0b1100) {
+		// https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-erref/87fba13e-bf06-450e-83b1-9241dc81e781
+		$data .= "\nTermsig=" . $stat["exitcode"] . "\n";
 	}
 
 	proc_close($proc);