diff --git a/plat/nvidia/tegra/common/tegra_sip_calls.c b/plat/nvidia/tegra/common/tegra_sip_calls.c
index d96ce7a..a818453 100644
--- a/plat/nvidia/tegra/common/tegra_sip_calls.c
+++ b/plat/nvidia/tegra/common/tegra_sip_calls.c
@@ -49,14 +49,14 @@
 /*******************************************************************************
  * This function is responsible for handling all SiP calls
  ******************************************************************************/
-uint64_t tegra_sip_handler(uint32_t smc_fid,
-			   uint64_t x1,
-			   uint64_t x2,
-			   uint64_t x3,
-			   uint64_t x4,
-			   void *cookie,
-			   void *handle,
-			   uint64_t flags)
+uintptr_t tegra_sip_handler(uint32_t smc_fid,
+			    u_register_t x1,
+			    u_register_t x2,
+			    u_register_t x3,
+			    u_register_t x4,
+			    void *cookie,
+			    void *handle,
+			    u_register_t flags)
 {
 	uint32_t regval;
 	int err;