diff --git a/src/protocol/mod.rs b/src/protocol/mod.rs
index 1b22d31e02ca3dd2218e5327823727bb2a53e821..11a19bd3ffbdc35734f7290fdbe9bad6d3276054 100644
--- a/src/protocol/mod.rs
+++ b/src/protocol/mod.rs
@@ -147,7 +147,7 @@ impl ProtocolDescription {
         use ConcreteTypePart as CTP;
 
         match &expected.parts[expected_idx] {
-            CTP::Void | CTP::Message | CTP::Slice | CTP::Function(_, _) | CTP::Component(_, _) => unreachable!(),
+            CTP::Void | CTP::Message | CTP::Slice | CTP::Pointer | CTP::Function(_, _) | CTP::Component(_, _) => unreachable!(),
             CTP::Bool => if let Value::Bool(_) = argument { true } else { false },
             CTP::UInt8 => if let Value::UInt8(_) = argument { true } else { false },
             CTP::UInt16 => if let Value::UInt16(_) = argument { true } else { false },