diff --git a/include/sys/syscall.h b/include/sys/syscall.h
index e3f0a78e513..5f36242b619 100644
--- a/include/sys/syscall.h
+++ b/include/sys/syscall.h
@@ -302,14 +302,14 @@
 #  define SYS_statfs                   (__SYS_filedesc+12)
 #  define SYS_telldir                  (__SYS_filedesc+13)
 
-#  if defined(CONFIG_PIPES) && ONFIG_DEV_PIPE_SIZE > 0
+#  if defined(CONFIG_PIPES) && CONFIG_DEV_PIPE_SIZE > 0
 #    define SYS_pipe2                  (__SYS_filedesc+14)
 #    define __SYS_mkfifo2              (__SYS_filedesc+15)
 #  else
 #    define __SYS_mkfifo2              (__SYS_filedesc+14)
 #  endif
 
-#  if defined(CONFIG_PIPES) && ONFIG_DEV_FIFO_SIZE > 0
+#  if defined(CONFIG_PIPES) && CONFIG_DEV_FIFO_SIZE > 0
 #    define SYS_mkfifo2                (__SYS_mkfifo2+0)
 #    define __SYS_fs_fdopen            (__SYS_mkfifo2+1)
 #  else
diff --git a/syscall/syscall_lookup.h b/syscall/syscall_lookup.h
index d625f7e19a6..58602a19ace 100644
--- a/syscall/syscall_lookup.h
+++ b/syscall/syscall_lookup.h
@@ -218,11 +218,11 @@ SYSCALL_LOOKUP(up_assert,                 2, STUB_up_assert)
   SYSCALL_LOOKUP(statfs,                  2, STUB_statfs)
   SYSCALL_LOOKUP(telldir,                 1, STUB_telldir)
 
-#  if defined(CONFIG_PIPES) && ONFIG_DEV_PIPE_SIZE > 0
+#  if defined(CONFIG_PIPES) && CONFIG_DEV_PIPE_SIZE > 0
   SYSCALL_LOOKUP(pipe2,                   2, STUB_pipe2)
 #  endif
 
-#  if defined(CONFIG_PIPES) && ONFIG_DEV_FIFO_SIZE > 0
+#  if defined(CONFIG_PIPES) && CONFIG_DEV_FIFO_SIZE > 0
   SYSCALL_LOOKUP(mkfifo2,                 3, STUB_mkfifo2)
 #  endif