5 files changed, 5 insertions, 0 deletions
diff --git a/builtin/diff-tree.c b/builtin/diff-tree.c
index 385c2d0230..0b02c62b85 100644
--- a/builtin/diff-tree.c
+++ b/builtin/diff-tree.c
@@ -9,6 +9,7 @@
 #include "builtin.h"
 #include "submodule.h"
 #include "repository.h"
+#include "tree.h"
 
 static struct rev_info log_tree_opt;
 
diff --git a/builtin/diff.c b/builtin/diff.c
index 8f386535d6..457dee1445 100644
--- a/builtin/diff.c
+++ b/builtin/diff.c
@@ -22,6 +22,7 @@
 #include "setup.h"
 #include "submodule.h"
 #include "oid-array.h"
+#include "tree.h"
 
 #define DIFF_NO_INDEX_EXPLICIT 1
 #define DIFF_NO_INDEX_IMPLICIT 2
diff --git a/builtin/gc.c b/builtin/gc.c
index b95154fba1..d11712b144 100644
--- a/builtin/gc.c
+++ b/builtin/gc.c
@@ -12,6 +12,7 @@
 
 #include "builtin.h"
 #include "abspath.h"
+#include "date.h"
 #include "environment.h"
 #include "hex.h"
 #include "repository.h"
diff --git a/builtin/log.c b/builtin/log.c
index 95de51921f..137b84b31e 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -44,6 +44,7 @@
 #include "commit-reach.h"
 #include "range-diff.h"
 #include "tmp-objdir.h"
+#include "tree.h"
 #include "write-or-die.h"
 
 #define MAIL_DEFAULT_WRAP 72
diff --git a/builtin/merge-tree.c b/builtin/merge-tree.c
index 6b9f006ec1..aa8040c2a6 100644
--- a/builtin/merge-tree.c
+++ b/builtin/merge-tree.c
@@ -16,6 +16,7 @@
 #include "exec-cmd.h"
 #include "merge-blobs.h"
 #include "quote.h"
+#include "tree.h"
 
 static int line_termination = '\n';