diff --git a/runtime/src/include/omp-tools.h.var b/runtime/src/include/omp-tools.h.var
index a3ec030..1d1a0f7 100644
--- a/runtime/src/include/omp-tools.h.var
+++ b/runtime/src/include/omp-tools.h.var
@@ -211,6 +211,10 @@
  * definitions generated from spec
  *****************************************************************************/
 
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
 typedef enum ompt_callbacks_t {
   ompt_callback_thread_begin             = 1,
   ompt_callback_thread_end               = 2,
@@ -1414,4 +1418,8 @@
 
 #define ompd_segment_none 0
 
+#if defined(__cplusplus)
+} // extern "C"
+#endif
+
 #endif /* __OMPT__ */