--- Makefile.am.orig	2018-10-08 19:04:23.241000607 -0600
+++ Makefile.am	2018-10-08 19:04:46.710000661 -0600
@@ -1,7 +1,7 @@
 ACLOCAL_AMFLAGS = -I m4
 SUBDIRS = src/lib example tests
 
-pkgconfigdir = $(prefix)/libdata/pkgconfig
+pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = libndpi.pc
 
 EXTRA_DIST = autogen.sh