2 files changed, 2 insertions, 0 deletions
diff --git a/common.mk b/common.mk
index d0b1b2996e..6b4a0b00f1 100644
--- a/common.mk
+++ b/common.mk
@@ -3035,6 +3035,7 @@ thread.$(OBJEXT): {$(VPATH)}debug_counter.h
 thread.$(OBJEXT): {$(VPATH)}defines.h
 thread.$(OBJEXT): {$(VPATH)}encoding.h
 thread.$(OBJEXT): {$(VPATH)}eval_intern.h
+thread.$(OBJEXT): {$(VPATH)}gc.h
 thread.$(OBJEXT): {$(VPATH)}hrtime.h
 thread.$(OBJEXT): {$(VPATH)}id.h
 thread.$(OBJEXT): {$(VPATH)}intern.h
diff --git a/thread.c b/thread.c
index 0f8b512405..52304f7efb 100644
--- a/thread.c
+++ b/thread.c
@@ -70,6 +70,7 @@
 #include "ruby/thread.h"
 #include "ruby/thread_native.h"
 #include "ruby/debug.h"
+#include "gc.h"
 #include "internal.h"
 #include "iseq.h"
 #include "vm_core.h"