diff --git a/syscall/syscall.csv b/syscall/syscall.csv
index e2e60a27a40..4622a0910b8 100644
--- a/syscall/syscall.csv
+++ b/syscall/syscall.csv
@@ -31,7 +31,7 @@
 "execve","unistd.h","!defined(CONFIG_BINFMT_DISABLE) && defined(CONFIG_LIBC_EXECFUNCS)","int","FAR const char *","FAR char * const []|FAR char * const *","FAR char * const []|FAR char * const *"
 "fchmod","sys/stat.h","","int","int","mode_t"
 "fchown","unistd.h","","int","int","uid_t","gid_t"
-"fcntl","fcntl.h","","int","int","int","...","int"
+"fcntl","fcntl.h","","int","int","int","...","uintptr_t"
 "fstat","sys/stat.h","","int","int","FAR struct stat *"
 "fstatfs","sys/statfs.h","","int","int","FAR struct statfs *"
 "fsync","unistd.h","","int","int"