diff --git a/fuzzers/FRET/src/systemstate/stg.rs b/fuzzers/FRET/src/systemstate/stg.rs
index 9eb74a499d..dd4c2d5fcf 100644
--- a/fuzzers/FRET/src/systemstate/stg.rs
+++ b/fuzzers/FRET/src/systemstate/stg.rs
@@ -294,9 +294,9 @@ where
 
 //============================= Graph Feedback
 
-pub static mut STG_MAP: [u8; EDGES_MAP_SIZE] = [0; EDGES_MAP_SIZE];
+pub static mut STG_MAP: [u16; EDGES_MAP_SIZE] = [0; EDGES_MAP_SIZE];
 pub static mut MAX_STG_NUM: usize = 0;
-pub unsafe fn stg_map_mut_slice<'a>() -> OwnedMutSlice<'a, u8> {
+pub unsafe fn stg_map_mut_slice<'a>() -> OwnedMutSlice<'a, u16> {
     OwnedMutSlice::from_raw_parts_mut(STG_MAP.as_mut_ptr(), STG_MAP.len())
 }