diff --git a/avahi-sharp.pc.in b/avahi-sharp.pc.in
index 3cc78b6..a604d93 100644
--- a/avahi-sharp.pc.in
+++ b/avahi-sharp.pc.in
@@ -5,4 +5,4 @@ libdir=@libdir@
 Name: avahi-sharp
 Description: Mono bindings for the Avahi mDNS/DNS-SD stack
 Version: @PACKAGE_VERSION@
-Libs: -r:${libdir}/mono/avahi-sharp/avahi-sharp.dll
+Libs: -r:${prefix}/lib/mono/avahi-sharp/avahi-sharp.dll
diff --git a/avahi-sharp/Makefile.am b/avahi-sharp/Makefile.am
index 1fdb1ca..55dd912 100644
--- a/avahi-sharp/Makefile.am
+++ b/avahi-sharp/Makefile.am
@@ -73,10 +73,10 @@ monodoc_DATA = avahi-sharp-docs.zip avahi-sharp-docs.tree avahi-sharp-docs.sourc
 endif
 
 install-data-hook: $(ASSEMBLY)
-	$(AM_V_GEN)MONO_SHARED_DIR=. $(GACUTIL) /i $(ASSEMBLY) /package avahi-sharp /gacdir $(libdir) /root $(DESTDIR)$(libdir)
+	$(AM_V_GEN)MONO_SHARED_DIR=. $(GACUTIL) /i $(ASSEMBLY) /package avahi-sharp /gacdir $(prefix)/lib /root $(DESTDIR)$(prefix)/lib
 
 uninstall-hook: $(ASSEMBLY)
-	$(AM_V_GEN)MONO_SHARED_DIR=. $(GACUTIL) /u avahi-sharp /package avahi-sharp /gacdir $(libdir) /root $(DESTDIR)$(libdir)
+	$(AM_V_GEN)MONO_SHARED_DIR=. $(GACUTIL) /u avahi-sharp /package avahi-sharp /gacdir $(prefix)/lib /root $(DESTDIR)$(prefix)/lib
 
 endif
 endif
diff --git a/avahi-ui-sharp.pc.in b/avahi-ui-sharp.pc.in
index cdc35e0..f73d049 100644
--- a/avahi-ui-sharp.pc.in
+++ b/avahi-ui-sharp.pc.in
@@ -6,4 +6,4 @@ Name: avahi-ui-sharp
 Description: Mono bindings for the Avahi mDNS/DNS-SD stack
 Version: @PACKAGE_VERSION@
 Requires: gtk-sharp-2.0
-Libs: -r:${libdir}/mono/avahi-ui-sharp/avahi-ui-sharp.dll
+Libs: -r:${prefix}/lib/mono/avahi-ui-sharp/avahi-ui-sharp.dll
diff --git a/avahi-ui-sharp/Makefile.am b/avahi-ui-sharp/Makefile.am
index 28ea64f..c7e2765 100644
--- a/avahi-ui-sharp/Makefile.am
+++ b/avahi-ui-sharp/Makefile.am
@@ -60,10 +60,10 @@ monodoc_DATA = avahi-ui-sharp-docs.zip avahi-ui-sharp-docs.tree avahi-ui-sharp-d
 endif
 
 install-data-hook: $(ASSEMBLY)
-	$(GACUTIL) /i $(ASSEMBLY) /package avahi-ui-sharp /gacdir $(libdir) /root $(DESTDIR)$(libdir)
+	$(GACUTIL) /i $(ASSEMBLY) /package avahi-ui-sharp /gacdir $(prefix)/lib /root $(DESTDIR)$(prefix)/lib
 
 uninstall-hook: $(ASSEMBLY)
-	$(GACUTIL) /u avahi-ui-sharp /package avahi-ui-sharp /gacdir $(libdir) /root $(DESTDIR)$(libdir)
+	$(GACUTIL) /u avahi-ui-sharp /package avahi-ui-sharp /gacdir $(prefix)/lib /root $(DESTDIR)$(prefix)/lib
 
 endif
 endif