diff --git a/tests/runtests.pl b/tests/runtests.pl
index bb1fae9bea..d67f40a123 100755
--- a/tests/runtests.pl
+++ b/tests/runtests.pl
@@ -426,6 +426,7 @@ foreach $protocol (('ftp', 'http', 'ftps', 'https', 'no', 'all')) {
 
 delete $ENV{'SSL_CERT_DIR'} if($ENV{'SSL_CERT_DIR'});
 delete $ENV{'SSL_CERT_PATH'} if($ENV{'SSL_CERT_PATH'});
+delete $ENV{'DEBUGINFOD_URLS'} if($ENV{'DEBUGINFOD_URLS'});
 delete $ENV{'CURL_CA_BUNDLE'} if($ENV{'CURL_CA_BUNDLE'});
 
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