diff --git a/core-writer/external/bitshuffle/bitshuffle.cpp b/core-writer/external/bitshuffle/bitshuffle.cpp
index 54ff045..b8944d7 100644
--- a/core-writer/external/bitshuffle/bitshuffle.cpp
+++ b/core-writer/external/bitshuffle/bitshuffle.cpp
@@ -11,8 +11,12 @@
 
 #include "bitshuffle.h"
 #include "bitshuffle_core.h"
-#include "bitshuffle_internals.h"
-#include "lz4.h"
+
+extern "C" {
+    #include "bitshuffle_internals.h"
+    #include "lz4.h"
+}
+
 
 #include <stdio.h>
 #include <string.h>
diff --git a/core-writer/external/bitshuffle/bitshuffle_core.cpp b/core-writer/external/bitshuffle/bitshuffle_core.cpp
index 583e4fe..539197f 100644
--- a/core-writer/external/bitshuffle/bitshuffle_core.cpp
+++ b/core-writer/external/bitshuffle/bitshuffle_core.cpp
@@ -10,7 +10,10 @@
  */
 
 #include "bitshuffle_core.h"
-#include "bitshuffle_internals.h"
+
+extern "C" {
+    #include "bitshuffle_internals.h"
+}
 
 #include <stdio.h>
 #include <string.h>