Index: kernel/arch/arm32/src/userspace.c
===================================================================
--- kernel/arch/arm32/src/userspace.c	(revision 88e43bc385a97c7449a8a8bdd10a598a9497c134)
+++ kernel/arch/arm32/src/userspace.c	(revision 9be2358aadbef3865ee2b3ab546d8b1f56d79cd6)
@@ -71,5 +71,5 @@
 
 	/* set first parameter */
-	ustate.r0 = (uintptr_t) kernel_uarg->uspace_uarg;
+	ustate.r0 = kernel_uarg->uspace_uarg;
 
 	/* %r1 is defined to hold pcb_ptr - set it to 0 */
@@ -93,9 +93,9 @@
 
 	/* set user stack */
-	ustate.sp = ((uint32_t) kernel_uarg->uspace_stack) +
+	ustate.sp = kernel_uarg->uspace_stack +
 	    kernel_uarg->uspace_stack_size;
 
 	/* set where uspace execution starts */
-	ustate.pc = (uintptr_t) kernel_uarg->uspace_entry;
+	ustate.pc = kernel_uarg->uspace_entry;
 
 	/* status register in user mode */