diff --git a/include/psa/crypto_builtin.h b/include/psa/crypto_builtin_primitives.h
similarity index 94%
rename from include/psa/crypto_builtin.h
rename to include/psa/crypto_builtin_primitives.h
index b3bc1408c..75801a178 100644
--- a/include/psa/crypto_builtin.h
+++ b/include/psa/crypto_builtin_primitives.h
@@ -1,6 +1,8 @@
 /*
  *  Context structure declaration of the Mbed TLS software-based PSA drivers
  *  called through the PSA Crypto driver dispatch layer.
+ *  This file contains the context structures of those algorithms which do not
+ *  rely on other algorithms, i.e. are 'primitive' algorithms.
  *
  * \note This file may not be included directly. Applications must
  * include psa/crypto.h.
@@ -28,8 +30,8 @@
  *  limitations under the License.
  */
 
-#ifndef PSA_CRYPTO_BUILTIN_H
-#define PSA_CRYPTO_BUILTIN_H
+#ifndef PSA_CRYPTO_BUILTIN_PRIMITIVES_H
+#define PSA_CRYPTO_BUILTIN_PRIMITIVES_H
 
 #include <psa/crypto_driver_common.h>
 
@@ -141,4 +143,4 @@ typedef struct {
 
 #endif /* PSA_CRYPTO_DRIVER_TEST */
 
-#endif /* PSA_CRYPTO_BUILTIN_H */
+#endif /* PSA_CRYPTO_BUILTIN_PRIMITIVES_H */
diff --git a/include/psa/crypto_driver_contexts.h b/include/psa/crypto_driver_contexts_primitives.h
similarity index 88%
rename from include/psa/crypto_driver_contexts.h
rename to include/psa/crypto_driver_contexts_primitives.h
index d725e8440..3e7fdee39 100644
--- a/include/psa/crypto_driver_contexts.h
+++ b/include/psa/crypto_driver_contexts_primitives.h
@@ -1,6 +1,7 @@
 /*
  *  Declaration of context structures for use with the PSA driver wrapper
- *  interface.
+ *  interface. This file contains the context structures for 'primitive'
+ *  operations, i.e. those operations which do not rely on other contexts.
  *
  *  Warning: This file will be auto-generated in the future.
  *
@@ -29,8 +30,8 @@
  *  limitations under the License.
  */
 
-#ifndef PSA_CRYPTO_DRIVER_CONTEXTS_H
-#define PSA_CRYPTO_DRIVER_CONTEXTS_H
+#ifndef PSA_CRYPTO_DRIVER_CONTEXTS_PRIMITIVES_H
+#define PSA_CRYPTO_DRIVER_CONTEXTS_PRIMITIVES_H
 
 #include "psa/crypto.h"
 #include "psa/crypto_driver_common.h"
@@ -39,7 +40,7 @@
  * declared during the autogeneration process. */
 
 /* Include the context structure definitions for the Mbed TLS software drivers */
-#include "psa/crypto_builtin.h"
+#include "psa/crypto_builtin_primitives.h"
 
 /* Define the context to be used for an operation that is executed through the
  * PSA Driver wrapper layer as the union of all possible driver's contexts.
@@ -65,5 +66,5 @@ typedef union {
 #endif
 } psa_driver_cipher_context_t;
 
-#endif /* PSA_CRYPTO_DRIVER_CONTEXTS_H */
+#endif /* PSA_CRYPTO_DRIVER_CONTEXTS_PRIMITIVES_H */
 /* End of automatically generated file. */
diff --git a/include/psa/crypto_struct.h b/include/psa/crypto_struct.h
index 8ac7ce1ef..5665fa541 100644
--- a/include/psa/crypto_struct.h
+++ b/include/psa/crypto_struct.h
@@ -77,7 +77,7 @@ extern "C" {
 #include "mbedtls/gcm.h"
 
 /* Include the context definition for the compiled-in drivers */
-#include "psa/crypto_driver_contexts.h"
+#include "psa/crypto_driver_contexts_primitives.h"
 
 struct psa_hash_operation_s
 {
diff --git a/visualc/VS2010/mbedTLS.vcxproj b/visualc/VS2010/mbedTLS.vcxproj
index c3e1d026a..66e1bc8da 100644
--- a/visualc/VS2010/mbedTLS.vcxproj
+++ b/visualc/VS2010/mbedTLS.vcxproj
@@ -208,11 +208,11 @@
     <ClInclude Include="..\..\include\mbedtls\x509_csr.h" />
     <ClInclude Include="..\..\include\mbedtls\xtea.h" />
     <ClInclude Include="..\..\include\psa\crypto.h" />
-    <ClInclude Include="..\..\include\psa\crypto_builtin.h" />
+    <ClInclude Include="..\..\include\psa\crypto_builtin_primitives.h" />
     <ClInclude Include="..\..\include\psa\crypto_compat.h" />
     <ClInclude Include="..\..\include\psa\crypto_config.h" />
     <ClInclude Include="..\..\include\psa\crypto_driver_common.h" />
-    <ClInclude Include="..\..\include\psa\crypto_driver_contexts.h" />
+    <ClInclude Include="..\..\include\psa\crypto_driver_contexts_primitives.h" />
     <ClInclude Include="..\..\include\psa\crypto_extra.h" />
     <ClInclude Include="..\..\include\psa\crypto_platform.h" />
     <ClInclude Include="..\..\include\psa\crypto_se_driver.h" />