diff --git a/builtin-help.c b/builtin-help.c
index 10a59cc403..7470faa566 100644
--- a/builtin-help.c
+++ b/builtin-help.c
@@ -3,6 +3,7 @@
  *
  * Builtin help-related commands (help, usage, version)
  */
+#include <sys/ioctl.h>
 #include "cache.h"
 #include "builtin.h"
 #include "exec_cmd.h"
diff --git a/diff-index.c b/diff-index.c
index 86940123b3..8c9f60173b 100644
--- a/diff-index.c
+++ b/diff-index.c
@@ -11,7 +11,6 @@ COMMON_DIFF_OPTIONS_HELP;
 int main(int argc, const char **argv)
 {
 	struct rev_info rev;
-	int match_missing = 0;
 	int cached = 0;
 	int i;
 
diff --git a/git.c b/git.c
index 619c6654e4..b761150c29 100644
--- a/git.c
+++ b/git.c
@@ -8,7 +8,6 @@
 #include <errno.h>
 #include <limits.h>
 #include <stdarg.h>
-#include <sys/ioctl.h>
 #include "git-compat-util.h"
 #include "exec_cmd.h"