diff --git a/src/rt/rust_shape.cpp b/src/rt/rust_shape.cpp
index aecb9254158f..ea8d251773d0 100644
--- a/src/rt/rust_shape.cpp
+++ b/src/rt/rust_shape.cpp
@@ -35,6 +35,8 @@ const uint8_t CMP_LE = 2u;
 
 namespace shape {
 
+using namespace shape;
+
 // NB: This function does not align.
 template<typename T>
 inline data_pair<T>