diff --git a/include/mbedtls/sha1.h b/include/mbedtls/sha1.h
index 9dde5b8..47a9f99 100644
--- a/include/mbedtls/sha1.h
+++ b/include/mbedtls/sha1.h
@@ -120,8 +120,8 @@
  *
  * \return         0 if successful
  */
-int mbedtls_sha1_process_ext( mbedtls_sha1_context *ctx,
-                              const unsigned char data[64] );
+int mbedtls_internal_sha1_process( mbedtls_sha1_context *ctx,
+                                   const unsigned char data[64] );
 
 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
 #if defined(MBEDTLS_DEPRECATED_WARNING)
@@ -177,7 +177,7 @@
 /**
  * \brief          SHA-1 process data block (internal use only)
  *
- * \deprecated     Superseded by mbedtls_sha1_process_ext() in 2.5.0
+ * \deprecated     Superseded by mbedtls_internal_sha1_process() in 2.5.0
  *
  * \param ctx      SHA-1 context
  * \param data     buffer holding one block of data
@@ -186,7 +186,7 @@
                                                 mbedtls_sha1_context *ctx,
                                                 const unsigned char data[64] )
 {
-    mbedtls_sha1_process_ext( ctx, data );
+    mbedtls_internal_sha1_process( ctx, data );
 }
 
 #undef MBEDTLS_DEPRECATED