diff --git a/testsuites/sptests/sp37/init.c b/testsuites/sptests/sp37/init.c
index 9ca5b3f06e..0575d88910 100644
--- a/testsuites/sptests/sp37/init.c
+++ b/testsuites/sptests/sp37/init.c
@@ -16,6 +16,9 @@
 #define CONFIGURE_INIT
 #include "system.h"
 
+/* HACK: API visibilty violation */
+extern rtems_attribute rtems_interrupt_level_attribute(uint32_t level);
+
 /* prototypes */
 void test_interrupt_inline(void);
 void check_isr_in_progress_inline(void);