diff --git a/arch/risc-v/src/common/riscv_backtrace.c b/arch/risc-v/src/common/riscv_backtrace.c
index b7be33d744..c59c10d9bc 100644
--- a/arch/risc-v/src/common/riscv_backtrace.c
+++ b/arch/risc-v/src/common/riscv_backtrace.c
@@ -142,8 +142,9 @@ int up_backtrace(struct tcb_s *tcb, void **buffer, int size, int skip)
       if (up_interrupt_context())
         {
 #if CONFIG_ARCH_INTERRUPTSTACK > 15
-          ret = backtrace(g_intstackalloc,
-                          g_intstackalloc + CONFIG_ARCH_INTERRUPTSTACK,
+          ret = backtrace((uintptr_t *)g_intstackalloc,
+                          (uintptr_t *)(g_intstackalloc +
+                                       CONFIG_ARCH_INTERRUPTSTACK),
                           (void *)getfp(), NULL, buffer, size, &skip);
 #else
           ret = backtrace(rtcb->stack_base_ptr,