diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index c5cae58b39..2c73da6ade 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2021-03-31  Tom de Vries  <tdevries@suse.de>
+
+	PR testsuite/27667
+	* lib/gdb.exp (default_gdb_init): Unset DEBUGINFOD_URLS.
+
 2021-03-30  Simon Marchi  <simon.marchi@polymtl.ca>
 
 	PR gdb/27541
diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index 73fea3a104..3cdc39dc81 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -5270,6 +5270,12 @@ proc default_gdb_init { test_file_name } {
     # tests.
     setenv TERM "dumb"
 
+    # If DEBUGINFOD_URLS is set, gdb will try to download sources and
+    # debug info for f.i. system libraries.  Prevent this.
+    if { [info exists env(DEBUGINFOD_URLS)] } {
+	unsetenv DEBUGINFOD_URLS
+    }
+
     # Ensure that GDBHISTFILE and GDBHISTSIZE are removed from the
     # environment, we don't want these modifications to the history
     # settings.