diff --git a/src/interpreter/host.rs b/src/interpreter/host.rs
index 93cb62e..86e448f 100644
--- a/src/interpreter/host.rs
+++ b/src/interpreter/host.rs
@@ -44,15 +44,15 @@ pub trait Externals {
 	fn check_signature(&self, index: HostFuncIndex, signature: &FunctionType) -> bool;
 }
 
-pub struct EmptyExternals;
+pub struct NopExternals;
 
-impl Externals for EmptyExternals {
+impl Externals for NopExternals {
 	fn invoke_index(
 		&mut self,
 		_index: HostFuncIndex,
 		_args: &[RuntimeValue],
 	) -> Result<Option<RuntimeValue>, Error> {
-		Err(Error::Trap("invoke index on empty externals".into()))
+		Err(Error::Trap("invoke index on no-op externals".into()))
 	}
 
 	fn check_signature(&self, _index: HostFuncIndex, _signature: &FunctionType) -> bool {
diff --git a/src/interpreter/mod.rs b/src/interpreter/mod.rs
index df04fee..b95296c 100644
--- a/src/interpreter/mod.rs
+++ b/src/interpreter/mod.rs
@@ -123,7 +123,7 @@ pub use self::memory::{MemoryInstance, MemoryRef};
 pub use self::table::{TableInstance, TableRef};
 pub use self::program::ProgramInstance;
 pub use self::value::{RuntimeValue, TryInto};
-pub use self::host::{Externals, HostFuncIndex, EmptyExternals, HostError};
+pub use self::host::{Externals, HostFuncIndex, NopExternals, HostError};
 pub use self::imports::{ImportResolver, Imports};
 pub use self::module::{ModuleInstance, ModuleRef, ExternVal};
 pub use self::global::{GlobalInstance, GlobalRef};