diff --git a/tests/libtest/test1013.pl b/tests/libtest/test1013.pl
index 6cf6727b9b..b97341d0cb 100755
--- a/tests/libtest/test1013.pl
+++ b/tests/libtest/test1013.pl
@@ -44,7 +44,7 @@ close CURL;
 
 $curl_protocols =~ s/\r//;
 $curl_protocols =~ /\w+: (.*)$/;
-@curl = split / /,$1;
+my @curl = split / /,$1;
 
 # Read the output of curl-config
 my @curl_config;