diff --git a/spm/common/spm_helpers.h b/spm/common/spm_helpers.h
index 1d3ddc2..59cdaf1 100644
--- a/spm/common/spm_helpers.h
+++ b/spm/common/spm_helpers.h
@@ -23,4 +23,6 @@
 int64_t spm_interrupt_enable(uint32_t int_id, bool enable, enum interrupt_pin pin);
 int64_t spm_interrupt_deactivate(uint32_t vint_id);
 
+unsigned int spm_get_my_core_pos(void);
+
 #endif /* SPMC_H */