diff --git a/mlkem/namespace.h b/mlkem/namespace.h
index 8c409fb0c..8d56503d9 100644
--- a/mlkem/namespace.h
+++ b/mlkem/namespace.h
@@ -31,9 +31,6 @@
 #define MLKEM_DEFAULT_NAMESPACE(s)                               \
   __MLKEM_DEFAULT_NAMESPACE(PQCP_MLKEM_NATIVE, MLKEM_PARAM_NAME, \
                             MLKEM_NATIVE_ARITH_BACKEND_NAME, s)
-#define _MLKEM_DEFAULT_NAMESPACE(s)                               \
-  __MLKEM_DEFAULT_NAMESPACE(_PQCP_MLKEM_NATIVE, MLKEM_PARAM_NAME, \
-                            MLKEM_NATIVE_ARITH_BACKEND_NAME, s)
 
 #if !defined(MLKEM_NATIVE_FIPS202_BACKEND_NAME)
 #define MLKEM_NATIVE_FIPS202_BACKEND_NAME C
@@ -50,8 +47,5 @@
 #define FIPS202_DEFAULT_NAMESPACE(s)                     \
   __FIPS202_DEFAULT_NAMESPACE(PQCP_MLKEM_NATIVE_FIPS202, \
                               MLKEM_NATIVE_FIPS202_BACKEND_NAME, s)
-#define _FIPS202_DEFAULT_NAMESPACE(s)                     \
-  __FIPS202_DEFAULT_NAMESPACE(_PQCP_MLKEM_NATIVE_FIPS202, \
-                              MLKEM_NATIVE_FIPS202_BACKEND_NAME, s)
 
 #endif /* MLKEM_NATIVE_NAMESPACE_H */