diff --git a/syscall/syscall.csv b/syscall/syscall.csv
index 59d1d6d643..7b727adcf1 100644
--- a/syscall/syscall.csv
+++ b/syscall/syscall.csv
@@ -19,7 +19,7 @@
 "connect","sys/socket.h","defined(CONFIG_NET)","int","int","FAR const struct sockaddr *","socklen_t"
 "dup","unistd.h","","int","int"
 "dup2","unistd.h","","int","int","int"
-"eventfd","sys/eventfd.h","defined(CONFIG_EVENT_FD)","unsigned int","int"
+"eventfd","sys/eventfd.h","defined(CONFIG_EVENT_FD)","int","unsigned int","int"
 "exec","nuttx/binfmt/binfmt.h","!defined(CONFIG_BINFMT_DISABLE) && !defined(CONFIG_BUILD_KERNEL)","int","FAR const char *","FAR char * const *","FAR const struct symtab_s *","int"
 "execv","unistd.h","!defined(CONFIG_BINFMT_DISABLE) && defined(CONFIG_LIBC_EXECFUNCS)","int","FAR const char *","FAR char * const []|FAR char * const *"
 "exit","stdlib.h","","void","int"