diff --git a/common.h b/common.h
index c0fdc5eb98..4aa99bc98b 100644
--- a/common.h
+++ b/common.h
@@ -3,6 +3,7 @@
 
 #include "git-compat-util.h"
 #include "wrapper.h"
+#include "usage.h"
 
 /*
  * ARRAY_SIZE - get the number of elements in a visible array
diff --git a/git-compat-util.h b/git-compat-util.h
index c2b92a3033..bc543baa66 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -573,19 +573,6 @@ static inline int git_has_dir_sep(const char *path)
 #include "compat/bswap.h"
 
 #include "wildmatch.h"
-#include "wrapper.h"
-
-/* General helper functions */
-NORETURN void usage(const char *err);
-NORETURN void usagef(const char *err, ...) __attribute__((format (printf, 1, 2)));
-NORETURN void die(const char *err, ...) __attribute__((format (printf, 1, 2)));
-NORETURN void die_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
-int die_message(const char *err, ...) __attribute__((format (printf, 1, 2)));
-int die_message_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
-int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
-int error_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
-void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
-void warning_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
 
 #ifndef NO_OPENSSL
 #ifdef APPLE_COMMON_CRYPTO
@@ -601,30 +588,6 @@ void warning_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
 #include <openssl/rand.h>
 #endif
 
-/*
- * Let callers be aware of the constant return value; this can help
- * gcc with -Wuninitialized analysis. We restrict this trick to gcc, though,
- * because other compilers may be confused by this.
- */
-#if defined(__GNUC__)
-static inline int const_error(void)
-{
-	return -1;
-}
-#define error(...) (error(__VA_ARGS__), const_error())
-#define error_errno(...) (error_errno(__VA_ARGS__), const_error())
-#endif
-
-typedef void (*report_fn)(const char *, va_list params);
-
-void set_die_routine(NORETURN_PTR report_fn routine);
-report_fn get_die_message_routine(void);
-void set_error_routine(report_fn routine);
-report_fn get_error_routine(void);
-void set_warn_routine(report_fn routine);
-report_fn get_warn_routine(void);
-void set_die_is_recursing_routine(int (*routine)(void));
-
 #if defined(NO_MMAP) || defined(USE_WIN32_MMAP)
 
 #ifndef PROT_READ
@@ -941,23 +904,6 @@ int git_regcomp(regex_t *preg, const char *pattern, int cflags);
 #endif
 #endif
 
-/* usage.c: only to be used for testing BUG() implementation (see test-tool) */
-extern int BUG_exit_code;
-
-/* usage.c: if bug() is called we should have a BUG_if_bug() afterwards */
-extern int bug_called_must_BUG;
-
-__attribute__((format (printf, 3, 4))) NORETURN
-void BUG_fl(const char *file, int line, const char *fmt, ...);
-#define BUG(...) BUG_fl(__FILE__, __LINE__, __VA_ARGS__)
-__attribute__((format (printf, 3, 4)))
-void bug_fl(const char *file, int line, const char *fmt, ...);
-#define bug(...) bug_fl(__FILE__, __LINE__, __VA_ARGS__)
-#define BUG_if_bug(...) do { \
-	if (bug_called_must_BUG) \
-		BUG_fl(__FILE__, __LINE__, __VA_ARGS__); \
-} while (0)
-
 #ifndef FSYNC_METHOD_DEFAULT
 #ifdef __APPLE__
 #define FSYNC_METHOD_DEFAULT FSYNC_METHOD_WRITEOUT_ONLY
diff --git a/usage.h b/usage.h
new file mode 100644
index 0000000000..770076e684
--- /dev/null
+++ b/usage.h
@@ -0,0 +1,60 @@
+#ifndef USAGE_H
+#define USAGE_H
+
+#include "git-compat-util.h"
+
+/* General helper functions */
+NORETURN void usage(const char *err);
+NORETURN void usagef(const char *err, ...) __attribute__((format (printf, 1, 2)));
+NORETURN void die(const char *err, ...) __attribute__((format (printf, 1, 2)));
+NORETURN void die_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
+int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
+int error_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
+int die_message(const char *err, ...) __attribute__((format (printf, 1, 2)));
+int die_message_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
+
+void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
+void warning_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
+
+/*
+ * Let callers be aware of the constant return value; this can help
+ * gcc with -Wuninitialized analysis. We restrict this trick to gcc, though,
+ * because other compilers may be confused by this.
+ */
+#if defined(__GNUC__)
+static inline int const_error(void)
+{
+	return -1;
+}
+#define error(...) (error(__VA_ARGS__), const_error())
+#define error_errno(...) (error_errno(__VA_ARGS__), const_error())
+#endif
+
+typedef void (*report_fn)(const char *, va_list params);
+
+void set_die_routine(NORETURN_PTR report_fn routine);
+report_fn get_die_message_routine(void);
+void set_error_routine(report_fn routine);
+report_fn get_error_routine(void);
+void set_warn_routine(report_fn routine);
+report_fn get_warn_routine(void);
+void set_die_is_recursing_routine(int (*routine)(void));
+
+/* usage.c: only to be used for testing BUG() implementation (see test-tool) */
+extern int BUG_exit_code;
+
+/* usage.c: if bug() is called we should have a BUG_if_bug() afterwards */
+extern int bug_called_must_BUG;
+
+__attribute__((format (printf, 3, 4))) NORETURN
+void BUG_fl(const char *file, int line, const char *fmt, ...);
+#define BUG(...) BUG_fl(__FILE__, __LINE__, __VA_ARGS__)
+__attribute__((format (printf, 3, 4)))
+void bug_fl(const char *file, int line, const char *fmt, ...);
+#define bug(...) bug_fl(__FILE__, __LINE__, __VA_ARGS__)
+#define BUG_if_bug(...) do { \
+	if (bug_called_must_BUG) \
+		BUG_fl(__FILE__, __LINE__, __VA_ARGS__); \
+} while (0)
+
+#endif /* USAGE_H */
