diff --git a/network/cache/Makefile b/network/cache/Makefile
index 5486ca38c94..022ce5a0dcc 100644
--- a/network/cache/Makefile
+++ b/network/cache/Makefile
@@ -28,12 +28,6 @@ CSRCS		= \
 	mkmemcac.c	\
 	$(NULL)
 
-ifdef NU_CACHE
-CSRCS += \
-	nucacheproto.c	\
-	$(NULL)
-endif
-
 EXPORTS= netcache.h mkcache.h mkmemcac.h extcache.h
 
 REQUIRES	= network nspr2 dbm util pref js java fileurl security layer img jtools cachelib
diff --git a/network/cache/Makefile.in b/network/cache/Makefile.in
index dc2e87467b3..805f7c4d599 100644
--- a/network/cache/Makefile.in
+++ b/network/cache/Makefile.in
@@ -33,12 +33,6 @@ CSRCS		= \
 	mkmemcac.c	\
 	$(NULL)
 
-ifdef NU_CACHE
-CSRCS += \
-	nucacheproto.c	\
-	$(NULL)
-endif
-
 EXPORTS= netcache.h mkcache.h mkmemcac.h extcache.h
 EXPORTS:= $(addprefix $(srcdir)/, $(EXPORTS))
 
diff --git a/network/cache/nucacheproto.c b/network/cache/nucacheproto.c
deleted file mode 100644
index e69de29bb2d..00000000000
diff --git a/network/cache/nucacheproto.h b/network/cache/nucacheproto.h
deleted file mode 100644
index e69de29bb2d..00000000000