diff --git a/library/ecp.c b/library/ecp.c
index 6a005d5..b07d6a2 100644
--- a/library/ecp.c
+++ b/library/ecp.c
@@ -77,6 +77,8 @@
 #include "mbedtls/platform_util.h"
 #include "mbedtls/error.h"
 
+#include "ecp_invasive.h"
+
 #include <string.h>
 
 #if !defined(MBEDTLS_ECP_ALT)
diff --git a/library/ecp_invasive.h b/library/ecp_invasive.h
new file mode 100644
index 0000000..7dd8ac2
--- /dev/null
+++ b/library/ecp_invasive.h
@@ -0,0 +1,36 @@
+/**
+ * \file ecp_invasive.h
+ *
+ * \brief ECP module: interfaces for invasive testing only.
+ *
+ * The interfaces in this file are intended for testing purposes only.
+ * They SHOULD NOT be made available in library integrations except when
+ * building the library for testing.
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *  not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+#ifndef MBEDTLS_ECP_INVASIVE_H
+#define MBEDTLS_ECP_INVASIVE_H
+
+#include "common.h"
+#include "mbedtls/ecp.h"
+
+#if defined(MBEDTLS_TEST_HOOKS) && defined(MBEDTLS_ECP_C)
+
+#endif /* MBEDTLS_TEST_HOOKS && MBEDTLS_ECP_C */
+
+#endif /* MBEDTLS_ECP_INVASIVE_H */
diff --git a/visualc/VS2010/mbedTLS.vcxproj b/visualc/VS2010/mbedTLS.vcxproj
index 09c5341..0158831 100644
--- a/visualc/VS2010/mbedTLS.vcxproj
+++ b/visualc/VS2010/mbedTLS.vcxproj
@@ -251,6 +251,7 @@
     <ClInclude Include="..\..\tests\include\test\drivers\test_driver.h" />
     <ClInclude Include="..\..\library\check_crypto_config.h" />
     <ClInclude Include="..\..\library\common.h" />
+    <ClInclude Include="..\..\library\ecp_invasive.h" />
     <ClInclude Include="..\..\library\mps_common.h" />
     <ClInclude Include="..\..\library\mps_error.h" />
     <ClInclude Include="..\..\library\mps_reader.h" />