diff --git a/fuzzers/wcet_qemu_sys/src/freertos.rs b/fuzzers/wcet_qemu_sys/src/freertos.rs
index 9833d9240a..332ef5b672 100644
--- a/fuzzers/wcet_qemu_sys/src/freertos.rs
+++ b/fuzzers/wcet_qemu_sys/src/freertos.rs
@@ -498,55 +498,6 @@ pub trait emu_lookup {
     fn lookup(emu: &Emulator, addr: ::std::os::raw::c_uint) -> Self;
 }
 
-impl emu_lookup for xLIST_ITEM {
-    fn lookup(emu: &Emulator, addr: ::std::os::raw::c_uint) -> xLIST_ITEM {
-        let mut tmp : [u8; std::mem::size_of::<xLIST_ITEM>()] = [0u8; std::mem::size_of::<xLIST_ITEM>()];
-        unsafe {
-            emu.read_mem(addr.into(), &mut tmp);
-            std::mem::transmute::<[u8; std::mem::size_of::<xLIST_ITEM>()], xLIST_ITEM>(tmp)
-        }
-    }
-}
-
-impl emu_lookup for TCB_t {
-    fn lookup(emu: &Emulator, addr: ::std::os::raw::c_uint) -> TCB_t {
-        let mut tmp : [u8; std::mem::size_of::<TCB_t>()] = [0u8; std::mem::size_of::<TCB_t>()];
-        unsafe {
-            emu.read_mem(addr.into(), &mut tmp);
-            std::mem::transmute::<[u8; std::mem::size_of::<TCB_t>()], TCB_t>(tmp)
-        }
-    }
-}
-
-impl emu_lookup for void_ptr {
-    fn lookup(emu: &Emulator, addr: ::std::os::raw::c_uint) -> void_ptr {
-        let mut tmp : [u8; std::mem::size_of::<void_ptr>()] = [0u8; std::mem::size_of::<void_ptr>()];
-        unsafe {
-            emu.read_mem(addr.into(), &mut tmp);
-            std::mem::transmute::<[u8; std::mem::size_of::<void_ptr>()], void_ptr>(tmp)
-        }
-    }
-}
-
-impl emu_lookup for List_t {
-    fn lookup(emu: &Emulator, addr: ::std::os::raw::c_uint) -> List_t {
-        let mut tmp : [u8; std::mem::size_of::<List_t>()] = [0u8; std::mem::size_of::<List_t>()];
-        unsafe {
-            emu.read_mem(addr.into(), &mut tmp);
-            std::mem::transmute::<[u8; std::mem::size_of::<List_t>()], List_t>(tmp)
-        }
-    }
-}
-
-impl emu_lookup for MiniListItem_t {
-    fn lookup(emu: &Emulator, addr: ::std::os::raw::c_uint) -> MiniListItem_t {
-        let mut tmp : [u8; std::mem::size_of::<MiniListItem_t>()] = [0u8; std::mem::size_of::<MiniListItem_t>()];
-        unsafe {
-            emu.read_mem(addr.into(), &mut tmp);
-            std::mem::transmute::<[u8; std::mem::size_of::<MiniListItem_t>()], MiniListItem_t>(tmp)
-        }
-    }
-}
 
 #[derive(Debug, Copy, Clone, Serialize, Deserialize)]
 pub enum rtos_struct {
@@ -554,4 +505,24 @@ pub enum rtos_struct {
     List_struct(List_t),
     List_Item_struct(ListItem_t),
     List_MiniItem_struct(MiniListItem_t),
-}
\ No newline at end of file
+}
+
+#[macro_export]
+macro_rules! impl_emu_lookup {
+    ($struct_name:ident) => {
+        impl $crate::freertos::emu_lookup for $struct_name {
+            fn lookup(emu: &Emulator, addr: ::std::os::raw::c_uint) -> $struct_name {
+                let mut tmp : [u8; std::mem::size_of::<$struct_name>()] = [0u8; std::mem::size_of::<$struct_name>()];
+                unsafe {
+                    emu.read_mem(addr.into(), &mut tmp);
+                    std::mem::transmute::<[u8; std::mem::size_of::<$struct_name>()], $struct_name>(tmp)
+                }
+            }
+        }
+    };
+}
+impl_emu_lookup!(TCB_t);
+impl_emu_lookup!(List_t);
+impl_emu_lookup!(ListItem_t);
+impl_emu_lookup!(MiniListItem_t);
+impl_emu_lookup!(void_ptr);
\ No newline at end of file