diff --git a/arch/sim/src/Makefile b/arch/sim/src/Makefile
index 8aced456f7..a454cafc41 100644
--- a/arch/sim/src/Makefile
+++ b/arch/sim/src/Makefile
@@ -190,6 +190,7 @@ endif
 ifeq ($(CONFIG_FS_HOSTFS),y)
 ifneq ($(CONFIG_FS_HOSTFS_RPMSG),y)
   HOSTSRCS += up_hostfs.c
+  HOSTCFLAGS += -DCONFIG_NAME_MAX=$(CONFIG_NAME_MAX)
 
 up_hostfs.c: hostfs.h
 
diff --git a/include/nuttx/fs/hostfs.h b/include/nuttx/fs/hostfs.h
index dd7cb835d8..73f16c970f 100644
--- a/include/nuttx/fs/hostfs.h
+++ b/include/nuttx/fs/hostfs.h
@@ -91,7 +91,7 @@
 
 /* Should match definition in include/limits.h */
 
-#define NUTTX_NAME_MAX   32
+#define NUTTX_NAME_MAX   CONFIG_NAME_MAX
 
 #endif /* __SIM__ */