diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/test-printf-ldbl-compat.c b/sysdeps/ieee754/ldbl-128ibm-compat/test-printf-ldbl-compat.c
index 0bd40c3aed..7276535106 100644
--- a/sysdeps/ieee754/ldbl-128ibm-compat/test-printf-ldbl-compat.c
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/test-printf-ldbl-compat.c
@@ -25,6 +25,7 @@
 #include <support/check.h>
 
 static void
+__attribute_disable_usbsan__
 do_test_call_varg (FILE *stream, const char *format, ...)
 {
   char *buffer = NULL;
@@ -79,6 +80,7 @@ do_test_call_varg (FILE *stream, const char *format, ...)
 }
 
 static void
+__attribute_disable_usbsan__
 do_test_call_rarg (FILE *stream, const char *format, long double ld, double d)
 {
   char *buffer = NULL;