diff --git a/include/plat/common/platform.h b/include/plat/common/platform.h
index 390721f..1d2a373 100644
--- a/include/plat/common/platform.h
+++ b/include/plat/common/platform.h
@@ -83,7 +83,7 @@
 /*******************************************************************************
  * Optional common functions (may be overridden)
  ******************************************************************************/
-unsigned long plat_get_my_stack(void);
+uintptr_t plat_get_my_stack(void);
 void plat_report_exception(unsigned long);
 int plat_crash_console_init(void);
 int plat_crash_console_putc(int c);