diff --git a/kernel/src/arch/aarch64/memory.rs b/kernel/src/arch/aarch64/memory.rs
index 18d226ba..68dda164 100644
--- a/kernel/src/arch/aarch64/memory.rs
+++ b/kernel/src/arch/aarch64/memory.rs
@@ -4,12 +4,10 @@ use super::paging::MMIOType;
 use crate::consts::{KERNEL_OFFSET, MEMORY_OFFSET};
 use crate::memory::{init_heap, kernel_offset, Linear, MemoryAttr, MemorySet, FRAME_ALLOCATOR};
 use log::*;
-use spin::Mutex;
 use rcore_memory::PAGE_SIZE;
+use spin::Mutex;
 
-lazy_static! {
-    static ref KERNEL_MEMORY_SET: Mutex<Option<MemorySet>> = Mutex::new(None);
-}
+static KERNEL_MEMORY_SET: Mutex<Option<MemorySet>> = Mutex::new(None);
 
 /// Memory initialization.
 pub fn init() {
diff --git a/kernel/src/drivers/console/mod.rs b/kernel/src/drivers/console/mod.rs
index bc87b51e..f2ccb5df 100644
--- a/kernel/src/drivers/console/mod.rs
+++ b/kernel/src/drivers/console/mod.rs
@@ -7,9 +7,7 @@ use spin::Mutex;
 // Console -> TextBuffer -> FrameBuffer
 type RCoreConsole = ConsoleOnGraphic<Framebuffer>;
 
-lazy_static! {
-    pub static ref CONSOLE: Mutex<Option<RCoreConsole>> = Mutex::new(None);
-}
+pub static CONSOLE: Mutex<Option<RCoreConsole>> = Mutex::new(None);
 
 /// Initialize console driver
 pub fn init() {
diff --git a/kernel/src/drivers/gpu/fb.rs b/kernel/src/drivers/gpu/fb.rs
index 3c857a4a..2dce75fc 100644
--- a/kernel/src/drivers/gpu/fb.rs
+++ b/kernel/src/drivers/gpu/fb.rs
@@ -295,9 +295,7 @@ impl ColorEncode for Rgb888 {
     }
 }
 
-lazy_static! {
-    pub static ref FRAME_BUFFER: Mutex<Option<Framebuffer>> = Mutex::new(None);
-}
+pub static FRAME_BUFFER: Mutex<Option<Framebuffer>> = Mutex::new(None);
 
 /// Initialize framebuffer
 ///