diff --git a/sys/unix/hints/include/cross-pre2.500 b/sys/unix/hints/include/cross-pre2.500
index d7f853721..03c35bcc7 100644
--- a/sys/unix/hints/include/cross-pre2.500
+++ b/sys/unix/hints/include/cross-pre2.500
@@ -329,7 +329,7 @@ WASM_CFLAGS += -Wshadow
 # WASM_CFLAGS += -Werror
 # Nethack C flags
 WASM_CFLAGS += $(WINCFLAGS)   #WINCFLAGS set from multiw-2.500
-WASM_CFLAGS += -DSYSCF -DSYSCF_FILE=\"/sysconf\" -DSECURE
+WASM_CFLAGS += -DSYSCF -DSYSCF_FILE=\"/sysconf\" -DSECURE -DNHUUID
 #WASM_CFLAGS += -g -I../include -DNOTPARMDECL
 WASM_CFLAGS += -I../include -DNOTPARMDECL
 # NetHack sources control