--- a/Makefile	2017-06-26 20:28:16.120774095 +0200
+++ b/Makefile	2017-06-26 20:29:24.869615176 +0200
@@ -5,11 +5,7 @@
 PROGNAME=dump1090
 SDRPLAY=1
 
-ifdef PREFIX
-BINDIR=$(PREFIX)/bin
-SHAREDIR=$(PREFIX)/share/$(PROGNAME)
-EXTRACFLAGS=-DHTMLPATH=\"$(SHAREDIR)\"
-endif
+EXTRACFLAGS=-DHTMLPATH=\"/usr/share/$(PROGNAME)/html/\"
 
 ifdef SDRPLAY
 SDRPLAY_LIBS = -lmirsdrapi-rsp