diff --git a/szl/src/main.rs b/szl/src/main.rs
index 0c98f3f..735dda8 100644
--- a/szl/src/main.rs
+++ b/szl/src/main.rs
@@ -120,13 +120,13 @@ pub fn main_core0() {
             slcr::BootModePins::Jtag => netboot::netboot(
                 &mut bootgen_file,
                 config,
-                addr_of_mut!(__runtime_start) as *mut u8,
+                addr_of_mut!(__runtime_start).cast(),
                 max_len,
             ),
             slcr::BootModePins::SdCard => {
                 if boot_sd(
                     &mut bootgen_file,
-                    addr_of_mut!(__runtime_start) as *mut u8,
+                    addr_of_mut!(__runtime_start).cast(),
                     max_len,
                 )
                 .is_err()
@@ -136,7 +136,7 @@ pub fn main_core0() {
                     netboot::netboot(
                         &mut bootgen_file,
                         config,
-                        addr_of_mut!(__runtime_start) as *mut u8,
+                        addr_of_mut!(__runtime_start).cast(),
                         max_len,
                     )
                 }
@@ -147,7 +147,7 @@ pub fn main_core0() {
                 netboot::netboot(
                     &mut bootgen_file,
                     config,
-                    addr_of_mut!(__runtime_start) as *mut u8,
+                    addr_of_mut!(__runtime_start).cast(),
                     max_len,
                 )
             }