1 files changed, 1 insertions, 0 deletions
diff --git a/thread.c b/thread.c
index 0cc64d9556..eb6ceaf156 100644
--- a/thread.c
+++ b/thread.c
@@ -62,6 +62,7 @@
 #include "timev.h"
 #include "ruby/io.h"
 #include "ruby/thread.h"
+#include "ruby/thread_native.h"
 #include "internal.h"
 
 #ifndef USE_NATIVE_THREAD_PRIORITY