diff --git a/src/cloudabi/arm.rs b/src/cloudabi/arm.rs
new file mode 100644
index 0000000..eca5360
--- /dev/null
+++ b/src/cloudabi/arm.rs
@@ -0,0 +1,4 @@
+pub type c_char = u8;
+pub type c_long = i32;
+pub type c_ulong = u32;
+pub type wchar_t = u32;
diff --git a/src/cloudabi/mod.rs b/src/cloudabi/mod.rs
index 1d8875f..e506414 100644
--- a/src/cloudabi/mod.rs
+++ b/src/cloudabi/mod.rs
@@ -151,6 +151,9 @@
     if #[cfg(target_arch = "aarch64")] {
         mod aarch64;
         pub use self::aarch64::*;
+    } else if #[cfg(any(target_arch = "arm"))] {
+        mod arm;
+        pub use self::arm::*;
     } else if #[cfg(any(target_arch = "x86"))] {
         mod x86;
         pub use self::x86::*;