diff --git a/core/ext/dynamic.rs b/core/ext/dynamic.rs
index 4e1e1447b..df342caca 100644
--- a/core/ext/dynamic.rs
+++ b/core/ext/dynamic.rs
@@ -65,7 +65,7 @@ pub(crate) unsafe extern "C" fn register_vfs(
     if name.is_null() || vfs.is_null() {
         return ResultCode::Error;
     }
-    let c_str = unsafe { CString::from_raw(name as *mut i8) };
+    let c_str = unsafe { CString::from_raw(name as *mut _) };
     let name_str = match c_str.to_str() {
         Ok(s) => s.to_string(),
         Err(_) => return ResultCode::Error,
@@ -116,7 +116,7 @@ pub fn add_builtin_vfs_extensions(
         }
         let vfsimpl = unsafe { &**vfs };
         let name = unsafe {
-            CString::from_raw(vfsimpl.name as *mut i8)
+            CString::from_raw(vfsimpl.name as *mut _)
                 .to_str()
                 .map_err(|_| {
                     LimboError::ExtensionError("unable to register vfs extension".to_string())
diff --git a/core/ext/mod.rs b/core/ext/mod.rs
index 22d2dfdb1..270bee682 100644
--- a/core/ext/mod.rs
+++ b/core/ext/mod.rs
@@ -68,7 +68,7 @@ pub(crate) unsafe extern "C" fn register_vtab_module(
     if name.is_null() || ctx.is_null() {
         return ResultCode::Error;
     }
-    let c_str = unsafe { CString::from_raw(name as *mut i8) };
+    let c_str = unsafe { CString::from_raw(name as *mut _) };
     let name_str = match c_str.to_str() {
         Ok(s) => s.to_string(),
         Err(_) => return ResultCode::Error,
diff --git a/core/io/vfs.rs b/core/io/vfs.rs
index 906237c0b..f3cac9d30 100644
--- a/core/io/vfs.rs
+++ b/core/io/vfs.rs
@@ -48,7 +48,7 @@ impl IO for VfsMod {
         unsafe {
             let vfs = &*self.ctx;
             let chars = (vfs.current_time)();
-            let cstr = CString::from_raw(chars as *mut i8);
+            let cstr = CString::from_raw(chars as *mut _);
             cstr.to_string_lossy().into_owned()
         }
     }