--- a/Makefile.am
+++ b/Makefile.am
@@ -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