diff --git a/src/Makefile.am b/src/Makefile.am
index e56a8a2..4adcc48 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -3,7 +3,7 @@ bin_PROGRAMS = $(top_builddir)/bin/vsearch
 if TARGET_PPC
 AM_CXXFLAGS=-Wall -Wsign-compare -O3 -g -mcpu=power8
 else
-AM_CXXFLAGS=-Wall -Wsign-compare -O3 -g -march=x86-64 -mtune=generic
+AM_CXXFLAGS=-Wall -Wsign-compare -O3 -g -lcityhash
 endif
 
 AM_CFLAGS=$(AM_CXXFLAGS)
@@ -18,8 +18,6 @@ allpairs.h \
 arch.h \
 bitmap.h \
 chimera.h \
-city.h \
-citycrc.h \
 cluster.h \
 cpu.h \
 db.h \
@@ -59,31 +57,26 @@ xstring.h
 
 if TARGET_PPC
 libcpu_a_SOURCES = cpu.cc $(VSEARCHHEADERS)
-noinst_LIBRARIES = libcpu.a libcityhash.a
+noinst_LIBRARIES = libcpu.a
 else
 libcpu_sse2_a_SOURCES = cpu.cc $(VSEARCHHEADERS)
 libcpu_sse2_a_CXXFLAGS = $(AM_CXXFLAGS) -msse2
 libcpu_ssse3_a_SOURCES = cpu.cc $(VSEARCHHEADERS)
 libcpu_ssse3_a_CXXFLAGS = $(AM_CXXFLAGS) -mssse3 -DSSSE3
-noinst_LIBRARIES = libcpu_sse2.a libcpu_ssse3.a libcityhash.a
+noinst_LIBRARIES = libcpu_sse2.a libcpu_ssse3.a
 endif
 
-libcityhash_a_SOURCES = city.cc city.h
-
 if TARGET_WIN
 
-libcityhash_a_CXXFLAGS = $(AM_CXXFLAGS) -Wno-sign-compare -D_MSC_VER
-__top_builddir__bin_vsearch_LDFLAGS = -static
-__top_builddir__bin_vsearch_LDADD = libregex.a libcityhash.a libcpu_ssse3.a libcpu_sse2.a
+__top_builddir__bin_vsearch_LDFLAGS = -static -lcityhash
+__top_builddir__bin_vsearch_LDADD = libregex.a libcpu_ssse3.a libcpu_sse2.a
 
 else
 
-libcityhash_a_CXXFLAGS = $(AM_CXXFLAGS) -Wno-sign-compare
-
 if TARGET_PPC
-__top_builddir__bin_vsearch_LDADD = libcityhash.a libcpu.a
+__top_builddir__bin_vsearch_LDADD = libcpu.a
 else
-__top_builddir__bin_vsearch_LDADD = libcityhash.a libcpu_ssse3.a libcpu_sse2.a
+__top_builddir__bin_vsearch_LDADD = libcpu_ssse3.a libcpu_sse2.a
 endif
 
 endif
diff --git a/src/vsearch.h b/src/vsearch.h
index f2c244b..5f51bbe 100644
--- a/src/vsearch.h
+++ b/src/vsearch.h
@@ -148,7 +148,7 @@
 #include <bzlib.h>
 #endif
 
-#include "city.h"
+#include <city.h>
 #include "md5.h"
 #include "sha1.h"
 
