diff --git a/builtin/fetch.c b/builtin/fetch.c
index 7b84d35d83..75a55e590b 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -11,7 +11,6 @@
 #include "run-command.h"
 #include "parse-options.h"
 #include "sigchain.h"
-#include "transport.h"
 #include "submodule.h"
 #include "connected.h"
 #include "argv-array.h"
diff --git a/trailer.c b/trailer.c
index 623adeb02d..05b3859b47 100644
--- a/trailer.c
+++ b/trailer.c
@@ -1,7 +1,6 @@
 #include "cache.h"
 #include "string-list.h"
 #include "run-command.h"
-#include "string-list.h"
 #include "commit.h"
 #include "trailer.h"
 /*
diff --git a/transport-helper.c b/transport-helper.c
index 7441d5d515..7dc4a443ae 100644
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -5,7 +5,6 @@
 #include "commit.h"
 #include "diff.h"
 #include "revision.h"
-#include "quote.h"
 #include "remote.h"
 #include "string-list.h"
 #include "thread-utils.h"
diff --git a/userdiff.c b/userdiff.c
index fad52d6392..2ccbee50cb 100644
--- a/userdiff.c
+++ b/userdiff.c
@@ -1,6 +1,5 @@
 #include "cache.h"
 #include "userdiff.h"
-#include "cache.h"
 #include "attr.h"
 
 static struct userdiff_driver *drivers;