diff --git a/src/header/dl-tls/mod.rs b/src/header/dl-tls/mod.rs
index 544fe3ae61..0196bf7bc8 100644
--- a/src/header/dl-tls/mod.rs
+++ b/src/header/dl-tls/mod.rs
@@ -10,7 +10,7 @@ use core::arch::global_asm;
 use alloc::alloc::alloc;
 use core::{alloc::Layout, ptr};
 
-use crate::{ld_so::tcb::Tcb, platform::types::*};
+use crate::{ld_so::tcb::Tcb, platform::types::c_void};
 
 #[repr(C)]
 #[allow(non_camel_case_types)]
@@ -40,7 +40,7 @@ pub unsafe extern "C" fn __tls_get_addr(ti: *mut dl_tls_index) -> *mut c_void {
         tcb.setup_dtv(masters.len());
     }
 
-    let dtv_index = ti.ti_module as usize - 1;
+    let dtv_index = ti.ti_module - 1;
 
     if tcb.dtv_mut()[dtv_index].is_null() {
         // Allocate TLS for module.
@@ -75,9 +75,9 @@ pub unsafe extern "C" fn __tls_get_addr(ti: *mut dl_tls_index) -> *mut c_void {
     }
 
     if cfg!(target_arch = "riscv64") {
-        ptr = unsafe { ptr.add(0x800 + ti.ti_offset as usize) }; // dynamic offsets are 0x800-based on risc-v
+        ptr = unsafe { ptr.add(0x800 + ti.ti_offset) }; // dynamic offsets are 0x800-based on risc-v
     } else {
-        ptr = unsafe { ptr.add(ti.ti_offset as usize) };
+        ptr = unsafe { ptr.add(ti.ti_offset) };
     }
 
     ptr.cast::<c_void>()
diff --git a/src/header/sys_epoll/linux.rs b/src/header/sys_epoll/linux.rs
index 0026bcde10..89b5365017 100644
--- a/src/header/sys_epoll/linux.rs
+++ b/src/header/sys_epoll/linux.rs
@@ -1,4 +1,4 @@
-use crate::platform::types::*;
+use crate::platform::types::{c_int, c_uint};
 
 pub const EPOLL_CLOEXEC: c_int = 0x8_0000;
 
diff --git a/src/header/sys_epoll/mod.rs b/src/header/sys_epoll/mod.rs
index ec29d409b9..afd328a4a2 100644
--- a/src/header/sys_epoll/mod.rs
+++ b/src/header/sys_epoll/mod.rs
@@ -1,11 +1,16 @@
-//! sys/epoll.h implementation for Redox, following http://man7.org/linux/man-pages/man7/epoll.7.html
+//! `sys/epoll.h` implementation.
+//!
+//! Non-POSIX, see: <http://man7.org/linux/man-pages/man7/epoll.7.html>.
 
 use core::ptr;
 
 use crate::{
     error::ResultExt,
     header::signal::sigset_t,
-    platform::{PalEpoll, Sys, types::*},
+    platform::{
+        PalEpoll, Sys,
+        types::{c_int, c_void},
+    },
 };
 
 pub use self::sys::*;
diff --git a/src/header/sys_epoll/redox.rs b/src/header/sys_epoll/redox.rs
index d2ef20d44c..dfaf15fd6d 100644
--- a/src/header/sys_epoll/redox.rs
+++ b/src/header/sys_epoll/redox.rs
@@ -1,4 +1,4 @@
-use crate::platform::types::*;
+use crate::platform::types::{c_int, c_uint};
 
 pub const EPOLL_CLOEXEC: c_int = 0x0100_0000;