diff -up ghostscript-9.16/devices/devs.mak.system-zlib ghostscript-9.16/devices/devs.mak
--- ghostscript-9.16/devices/devs.mak.system-zlib	2015-03-30 17:47:57.931725800 +0100
+++ ghostscript-9.16/devices/devs.mak	2015-03-30 17:48:14.539673024 +0100
@@ -1231,7 +1231,7 @@ $(libtiff_dev) $(MAKEDIRS)
 
 $(DEVOBJ)gdevxps.$(OBJ) : $(DEVVECSRC)gdevxps.c $(gdevvec_h) \
 $(string__h) $(stdio__h) $(libtiff_dev) $(gx_h) $(gserrors_h) \
-$(gxpath_h) $(gzcpath_h) $(stream_h) $(zlib_h) \
+$(gxpath_h) $(gzcpath_h) $(stream_h) \
 $(stdint__h) $(gdevtifs_h) $(gsicc_create_h) $(gsicc_cache_h) \
 $(gximdecode_h) $(MAKEDIRS)
 	$(XPSDEVCC) $(I_)$(TI_)$(_I) $(GLO_)gdevxps.$(OBJ) $(C_) $(DEVVECSRC)gdevxps.c
@@ -1683,7 +1683,7 @@ $(DD)pngalpha.dev : $(DEVS_MAK) $(libpng
 fpng_=$(DEVOBJ)gdevfpng.$(OBJ) $(DEVOBJ)gdevpccm.$(OBJ)
 
 $(DEVOBJ)gdevfpng_0.$(OBJ) : $(DEVSRC)gdevfpng.c\
- $(gdevprn_h) $(gdevpccm_h) $(gscdefs_h) $(zlib_h) $(MAKEDIRS)
+ $(gdevprn_h) $(gdevpccm_h) $(gscdefs_h) $(MAKEDIRS)
 	$(CC_) $(I_)$(DEVI_) $(II)$(PI_)$(_I) $(PCF_) $(GLF_) $(DEVO_)gdevfpng_0.$(OBJ) $(C_) $(DEVSRC)gdevfpng.c
 
 $(DEVOBJ)gdevfpng_1.$(OBJ) : $(DEVSRC)gdevfpng.c\