diff --git a/applications/sh/launch.asm b/applications/sh/launch.asm
index 49e5abe..6548f23 100644
--- a/applications/sh/launch.asm
+++ b/applications/sh/launch.asm
@@ -110,7 +110,7 @@ allocate_error:
 
 launch_fxf_name: data.str "        fxf"
 launch_fxf_spaces: data.str "        "
-launch_fxf_struct: data.32 0 data.32 0
+launch_fxf_struct: data.fill 0, 32
 launch_fxf_task_id: data.8 0
 launch_fxf_binary_ptr: data.32 0
 launch_fxf_stack_ptr: data.32 0
diff --git a/bootloader/main.asm b/bootloader/main.asm
index 9fb797e..b35db0c 100644
--- a/bootloader/main.asm
+++ b/bootloader/main.asm
@@ -37,7 +37,7 @@ error:
     rjmp 0
 
 kernel_file_name: data.strz "kernel  fxf"
-kernel_file_struct: data.32 0 data.32 0
+kernel_file_struct: data.fill 0, 32
 error_str: data.strz "failed to open kernel file"
 boot_disk_id: data.8 0
 
diff --git a/kernel/main.asm b/kernel/main.asm
index ed49873..b2b8cee 100644
--- a/kernel/main.asm
+++ b/kernel/main.asm
@@ -416,11 +416,9 @@ bottom_bar_patterns:
 next_task: data.8 0
 current_disk_id: data.8 0
 startup_cfg: data.str "startup cfg"
-startup_cfg_struct: data.32 0 data.32 0
+startup_cfg_struct: data.fill 0, 32
 startup_file: data.str "           "
-startup_file_struct: data.32 0 data.32 0
-startup_file_binary_ptr: data.32 0
-startup_file_stack_ptr: data.32 0
+startup_file_struct: data.fill 0, 32
 
     #include "../../fox32rom/fox32rom.def"