diff --git a/t/chainlint.pl b/t/chainlint.pl
index 4e47e808d0..e966412999 100755
--- a/t/chainlint.pl
+++ b/t/chainlint.pl
@@ -709,7 +709,7 @@ sub ncores {
 	# Windows
 	return $ENV{NUMBER_OF_PROCESSORS} if exists($ENV{NUMBER_OF_PROCESSORS});
 	# Linux / MSYS2 / Cygwin / WSL
-	do { local @ARGV='/proc/cpuinfo'; return scalar(grep(/^processor\s*:/, <>)); } if -r '/proc/cpuinfo';
+	do { local @ARGV='/proc/cpuinfo'; return scalar(grep(/^processor[\s\d]*:/, <>)); } if -r '/proc/cpuinfo';
 	# macOS & BSD
 	return qx/sysctl -n hw.ncpu/ if $^O =~ /(?:^darwin$|bsd)/;
 	return 1;