diff --git a/src/basic/fd-util.h b/src/basic/fd-util.h
index f5357860f5..76be00e4f4 100644
--- a/src/basic/fd-util.h
+++ b/src/basic/fd-util.h
@@ -74,14 +74,6 @@ int fd_get_path(int fd, char **ret);
 
 int move_fd(int from, int to, int cloexec);
 
-enum {
-        ACQUIRE_NO_DEV_NULL = 1 << 0,
-        ACQUIRE_NO_MEMFD    = 1 << 1,
-        ACQUIRE_NO_PIPE     = 1 << 2,
-        ACQUIRE_NO_TMPFILE  = 1 << 3,
-        ACQUIRE_NO_REGULAR  = 1 << 4,
-};
-
 int fd_move_above_stdio(int fd);
 
 int rearrange_stdio(int original_input_fd, int original_output_fd, int original_error_fd);
diff --git a/src/shared/data-fd-util.h b/src/shared/data-fd-util.h
index f0e7923556..4f3d8b8e74 100644
--- a/src/shared/data-fd-util.h
+++ b/src/shared/data-fd-util.h
@@ -1,7 +1,15 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include <stddef.h>
+#include <inttypes.h>
+
+enum {
+        ACQUIRE_NO_DEV_NULL = 1 << 0,
+        ACQUIRE_NO_MEMFD    = 1 << 1,
+        ACQUIRE_NO_PIPE     = 1 << 2,
+        ACQUIRE_NO_TMPFILE  = 1 << 3,
+        ACQUIRE_NO_REGULAR  = 1 << 4,
+};
 
 int acquire_data_fd(const void *data, size_t size, unsigned flags);
 int copy_data_fd(int fd);