diff --git a/src/sys/block_group.rs b/src/sys/block_group.rs
index eb277b9..14bff9b 100644
--- a/src/sys/block_group.rs
+++ b/src/sys/block_group.rs
@@ -41,7 +41,7 @@ pub struct BlockGroupDescriptor {
 }
 
 impl BlockGroupDescriptor {
-    pub fn find_descriptor_table<'a>(
+    pub unsafe fn find_descriptor_table<'a>(
         haystack: &'a mut [u8],
         offset: isize,
         count: usize,
diff --git a/src/sys/superblock.rs b/src/sys/superblock.rs
index 93748a4..1a26b9b 100644
--- a/src/sys/superblock.rs
+++ b/src/sys/superblock.rs
@@ -147,7 +147,7 @@ pub struct Superblock {
 }
 
 impl Superblock {
-    pub fn find<'a>(
+    pub unsafe fn find<'a>(
         haystack: &'a mut [u8],
         offset: isize,
     ) -> Result<&'a mut Superblock, Error> {