diff --git a/src/bpf.rs b/src/bpf.rs
index 74444749..bc29b2eb 100644
--- a/src/bpf.rs
+++ b/src/bpf.rs
@@ -12,7 +12,7 @@ use crate::{
     maps::{Map, MapError},
     obj::{btf::BtfError, Object, ParseError},
     programs::{KProbe, Program, ProgramData, ProgramError, SocketFilter, TracePoint, UProbe, Xdp},
-    syscalls::bpf_map_update_elem_ptr,
+    sys::bpf_map_update_elem_ptr,
 };
 
 pub(crate) const BPF_OBJ_NAME_LEN: usize = 16;
diff --git a/src/lib.rs b/src/lib.rs
index bceaa6da..14a3e8d7 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -8,6 +8,6 @@ mod generated;
 pub mod maps;
 mod obj;
 pub mod programs;
-mod syscalls;
+mod sys;
 
 pub use bpf::*;
diff --git a/src/maps/hash_map.rs b/src/maps/hash_map.rs
index 3607b8fd..5a7ea257 100644
--- a/src/maps/hash_map.rs
+++ b/src/maps/hash_map.rs
@@ -9,7 +9,7 @@ use std::{
 use crate::{
     generated::bpf_map_type::BPF_MAP_TYPE_HASH,
     maps::{IterableMap, Map, MapError, MapIter, MapKeys},
-    syscalls::{
+    sys::{
         bpf_map_delete_elem, bpf_map_lookup_and_delete_elem, bpf_map_lookup_elem,
         bpf_map_update_elem,
     },
@@ -142,7 +142,7 @@ mod tests {
             bpf_map_type::{BPF_MAP_TYPE_HASH, BPF_MAP_TYPE_PERF_EVENT_ARRAY},
         },
         obj,
-        syscalls::{override_syscall, SysResult, Syscall},
+        sys::{override_syscall, SysResult, Syscall},
     };
 
     use super::*;
diff --git a/src/maps/mod.rs b/src/maps/mod.rs
index 1972cb0e..a64b6957 100644
--- a/src/maps/mod.rs
+++ b/src/maps/mod.rs
@@ -3,7 +3,7 @@ use thiserror::Error;
 
 use crate::{
     obj,
-    syscalls::{bpf_create_map, bpf_map_get_next_key},
+    sys::{bpf_create_map, bpf_map_get_next_key},
     Pod, RawFd,
 };
 
@@ -196,7 +196,7 @@ mod tests {
     use crate::{
         bpf_map_def,
         generated::{bpf_cmd, bpf_map_type::BPF_MAP_TYPE_HASH},
-        syscalls::{override_syscall, Syscall},
+        sys::{override_syscall, Syscall},
     };
 
     use super::*;
diff --git a/src/maps/perf_map.rs b/src/maps/perf_map.rs
index 48a3f60f..d822f8dc 100644
--- a/src/maps/perf_map.rs
+++ b/src/maps/perf_map.rs
@@ -21,7 +21,7 @@ use crate::{
         perf_event_type::*,
     },
     maps::{Map, MapError},
-    syscalls::{bpf_map_update_elem, perf_event_ioctl, perf_event_open},
+    sys::{bpf_map_update_elem, perf_event_ioctl, perf_event_open},
     RawFd, PERF_EVENT_IOC_DISABLE, PERF_EVENT_IOC_ENABLE,
 };
 
@@ -397,7 +397,7 @@ unsafe fn mmap(
     return libc::mmap(addr, len, prot, flags, fd, offset);
 
     #[cfg(test)]
-    use crate::syscalls::TEST_MMAP_RET;
+    use crate::sys::TEST_MMAP_RET;
 
     #[cfg(test)]
     TEST_MMAP_RET.with(|ret| *ret.borrow())
@@ -423,7 +423,7 @@ mod tests {
     use super::*;
     use crate::{
         generated::perf_event_mmap_page,
-        syscalls::{override_syscall, Syscall, TEST_MMAP_RET},
+        sys::{override_syscall, Syscall, TEST_MMAP_RET},
     };
 
     use std::{convert::TryInto, fmt::Debug, iter::FromIterator, mem};
diff --git a/src/maps/program_array.rs b/src/maps/program_array.rs
index 70bbb9f4..a3998f00 100644
--- a/src/maps/program_array.rs
+++ b/src/maps/program_array.rs
@@ -10,7 +10,7 @@ use crate::{
     generated::bpf_map_type::BPF_MAP_TYPE_PROG_ARRAY,
     maps::{IterableMap, Map, MapError, MapIter, MapKeys},
     programs::ProgramFd,
-    syscalls::{
+    sys::{
         bpf_map_delete_elem, bpf_map_lookup_and_delete_elem, bpf_map_lookup_elem,
         bpf_map_update_elem,
     },
diff --git a/src/programs/mod.rs b/src/programs/mod.rs
index 9b8c1601..7be70c9f 100644
--- a/src/programs/mod.rs
+++ b/src/programs/mod.rs
@@ -23,7 +23,7 @@ pub use socket_filter::*;
 pub use trace_point::*;
 pub use xdp::*;
 
-use crate::{obj, syscalls::bpf_load_program, RawFd};
+use crate::{obj, sys::bpf_load_program, RawFd};
 #[derive(Debug, Error)]
 pub enum ProgramError {
     #[error("the program {program} is already loaded")]
diff --git a/src/programs/perf_attach.rs b/src/programs/perf_attach.rs
index 2faaee3e..8eaa2989 100644
--- a/src/programs/perf_attach.rs
+++ b/src/programs/perf_attach.rs
@@ -3,7 +3,7 @@ use std::{cell::RefCell, rc::Rc};
 use libc::close;
 
 use crate::{
-    syscalls::perf_event_ioctl, RawFd, PERF_EVENT_IOC_DISABLE, PERF_EVENT_IOC_ENABLE,
+    sys::perf_event_ioctl, RawFd, PERF_EVENT_IOC_DISABLE, PERF_EVENT_IOC_ENABLE,
     PERF_EVENT_IOC_SET_BPF,
 };
 
diff --git a/src/programs/probe.rs b/src/programs/probe.rs
index 6b9a29d4..8da150d6 100644
--- a/src/programs/probe.rs
+++ b/src/programs/probe.rs
@@ -13,7 +13,7 @@ use thiserror::Error;
 use crate::{
     generated::bpf_prog_type::BPF_PROG_TYPE_KPROBE,
     programs::{load_program, perf_attach, Link, ProgramData, ProgramError},
-    syscalls::perf_event_open_probe,
+    sys::perf_event_open_probe,
 };
 
 lazy_static! {
diff --git a/src/programs/trace_point.rs b/src/programs/trace_point.rs
index d7f2fe60..7f210d39 100644
--- a/src/programs/trace_point.rs
+++ b/src/programs/trace_point.rs
@@ -1,8 +1,6 @@
 use std::fs;
 
-use crate::{
-    generated::bpf_prog_type::BPF_PROG_TYPE_TRACEPOINT, syscalls::perf_event_open_trace_point,
-};
+use crate::{generated::bpf_prog_type::BPF_PROG_TYPE_TRACEPOINT, sys::perf_event_open_trace_point};
 
 use super::{load_program, perf_attach, Link, ProgramData, ProgramError};
 
diff --git a/src/programs/xdp.rs b/src/programs/xdp.rs
index 12cd83cf..e3c8162f 100644
--- a/src/programs/xdp.rs
+++ b/src/programs/xdp.rs
@@ -6,7 +6,7 @@ use crate::RawFd;
 use crate::{
     generated::{bpf_attach_type::BPF_XDP, bpf_prog_type::BPF_PROG_TYPE_XDP},
     programs::{load_program, FdLink, Link, LinkRef, ProgramData, ProgramError},
-    syscalls::bpf_link_create,
+    sys::bpf_link_create,
 };
 
 #[derive(Debug)]
diff --git a/src/syscalls/bpf.rs b/src/sys/bpf.rs
similarity index 99%
rename from src/syscalls/bpf.rs
rename to src/sys/bpf.rs
index af3e8f81..fc0a4fb3 100644
--- a/src/syscalls/bpf.rs
+++ b/src/sys/bpf.rs
@@ -12,7 +12,7 @@ use crate::{
     bpf_map_def,
     generated::{bpf_attach_type, bpf_attr, bpf_cmd, bpf_insn},
     programs::VerifierLog,
-    syscalls::SysResult,
+    sys::SysResult,
     Pod, RawFd, BPF_OBJ_NAME_LEN,
 };
 
diff --git a/src/syscalls/fake.rs b/src/sys/fake.rs
similarity index 97%
rename from src/syscalls/fake.rs
rename to src/sys/fake.rs
index 0be0e6a9..a72027b9 100644
--- a/src/syscalls/fake.rs
+++ b/src/sys/fake.rs
@@ -17,6 +17,7 @@ unsafe fn test_syscall(_call: Syscall) -> SysResult {
     return Err((-1, io::Error::from_raw_os_error(libc::EINVAL)));
 }
 
+#[cfg(test)]
 pub(crate) fn override_syscall(call: unsafe fn(Syscall) -> SysResult) {
     TEST_SYSCALL.with(|test_impl| *test_impl.borrow_mut() = call);
 }
diff --git a/src/syscalls/mod.rs b/src/sys/mod.rs
similarity index 100%
rename from src/syscalls/mod.rs
rename to src/sys/mod.rs
diff --git a/src/syscalls/perf_event.rs b/src/sys/perf_event.rs
similarity index 95%
rename from src/syscalls/perf_event.rs
rename to src/sys/perf_event.rs
index 62db76c7..72ea6cd9 100644
--- a/src/syscalls/perf_event.rs
+++ b/src/sys/perf_event.rs
@@ -85,5 +85,5 @@ pub(crate) fn perf_event_ioctl(fd: c_int, request: c_ulong, arg: c_int) -> SysRe
     return syscall(call);
 
     #[cfg(test)]
-    return crate::syscalls::TEST_SYSCALL.with(|test_impl| unsafe { test_impl.borrow()(call) });
+    return crate::sys::TEST_SYSCALL.with(|test_impl| unsafe { test_impl.borrow()(call) });
 }