diff --git a/src/basic/fd-util.h b/src/basic/fd-util.h
index 7d5b9f3083..75cc5310c7 100644
--- a/src/basic/fd-util.h
+++ b/src/basic/fd-util.h
@@ -18,6 +18,32 @@
 #define EBADF_PAIR { -EBADF, -EBADF }
 #define EBADF_TRIPLET { -EBADF, -EBADF, -EBADF }
 
+/* So O_LARGEFILE is generally implied by glibc, and defined to zero hence, because we only build in LFS
+ * mode. However, when invoking fcntl(F_GETFL) the flag is ORed into the result anyway — glibc does not mask
+ * it away. Which sucks. Let's define the actual value here, so that we can mask it ourselves.
+ *
+ * The precise definition is arch specific, so we use the values defined in the kernel (note that some
+ * are hexa and others are octal; duplicated as-is from the kernel definitions):
+ * - alpha, arm, arm64, m68k, mips, parisc, powerpc, sparc: each has a specific value;
+ * - others: they use the "generic" value (defined in include/uapi/asm-generic/fcntl.h) */
+#if O_LARGEFILE != 0
+#  define RAW_O_LARGEFILE O_LARGEFILE
+#else
+#  if defined(__alpha__) || defined(__arm__) || defined(__aarch64__) || defined(__m68k__)
+#    define RAW_O_LARGEFILE 0400000
+#  elif defined(__mips__)
+#    define RAW_O_LARGEFILE 0x2000
+#  elif defined(__parisc__) || defined(__hppa__)
+#    define RAW_O_LARGEFILE 000004000
+#  elif defined(__powerpc__)
+#    define RAW_O_LARGEFILE 0200000
+#  elif defined(__sparc__)
+#    define RAW_O_LARGEFILE 0x40000
+#  else
+#    define RAW_O_LARGEFILE 00100000
+#  endif
+#endif
+
 int close_nointr(int fd);
 int safe_close(int fd);
 void safe_close_pair(int p[static 2]);
diff --git a/src/basic/include/fcntl.h b/src/basic/include/fcntl.h
index 86e0c8bbf5..344287f768 100644
--- a/src/basic/include/fcntl.h
+++ b/src/basic/include/fcntl.h
@@ -13,32 +13,6 @@
 #define F_SEAL_EXEC     0x0020  /* prevent chmod modifying exec bits */
 #endif
 
-/* So O_LARGEFILE is generally implied by glibc, and defined to zero hence, because we only build in LFS
- * mode. However, when invoking fcntl(F_GETFL) the flag is ORed into the result anyway — glibc does not mask
- * it away. Which sucks. Let's define the actual value here, so that we can mask it ourselves.
- *
- * The precise definition is arch specific, so we use the values defined in the kernel (note that some
- * are hexa and others are octal; duplicated as-is from the kernel definitions):
- * - alpha, arm, arm64, m68k, mips, parisc, powerpc, sparc: each has a specific value;
- * - others: they use the "generic" value (defined in include/uapi/asm-generic/fcntl.h) */
-#if O_LARGEFILE != 0
-#define RAW_O_LARGEFILE O_LARGEFILE
-#else
-#if defined(__alpha__) || defined(__arm__) || defined(__aarch64__) || defined(__m68k__)
-#define RAW_O_LARGEFILE 0400000
-#elif defined(__mips__)
-#define RAW_O_LARGEFILE 0x2000
-#elif defined(__parisc__) || defined(__hppa__)
-#define RAW_O_LARGEFILE 000004000
-#elif defined(__powerpc__)
-#define RAW_O_LARGEFILE 0200000
-#elif defined(__sparc__)
-#define RAW_O_LARGEFILE 0x40000
-#else
-#define RAW_O_LARGEFILE 00100000
-#endif
-#endif
-
 /* This is defined since glibc-2.39. */
 #ifndef AT_HANDLE_FID
 #define AT_HANDLE_FID AT_REMOVEDIR