diff --git a/tests/busywait.rs b/tests/busywait.rs
index b63e77f..805c2a4 100644
--- a/tests/busywait.rs
+++ b/tests/busywait.rs
@@ -14,7 +14,6 @@
 //! This verifies that timer events, if requested, are delivered during busywaits and are not delivered
 //! if not requested.
 
-use libc;
 use raw_cpuid::cpuid;
 use reverie::syscalls::Syscall;
 use reverie::CpuIdResult;
diff --git a/tests/timer_semantics.rs b/tests/timer_semantics.rs
index 590a497..d8ded6d 100644
--- a/tests/timer_semantics.rs
+++ b/tests/timer_semantics.rs
@@ -16,7 +16,6 @@
 use core::arch::x86_64::__cpuid;
 use core::arch::x86_64::__rdtscp;
 use core::arch::x86_64::_rdtsc;
-use libc;
 use reverie::syscalls::Getpid;
 use reverie::syscalls::Gettid;
 use reverie::syscalls::Syscall;