diff --git a/CMakeLists.txt b/CMakeLists.txt
index 07a6c2e5..8e42025c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -221,7 +221,7 @@ if(NOT DEFINED CMAKE_INSTALL_LIBDIR)
   set(CMAKE_INSTALL_LIBDIR "${_LIBDIR_DEFAULT}" CACHE PATH "object code libraries (${_LIBDIR_DEFAULT})")
 endif()
 
-SET(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}")
+SET(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_FULL_LIBDIR}")
 SET(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
 #SET(CMAKE_MACOSX_RPATH ON)
 
diff --git a/sfcgal-config.in b/sfcgal-config.in
index a0e992c5..49615c13 100755
--- a/sfcgal-config.in
+++ b/sfcgal-config.in
@@ -1,6 +1,6 @@
 #!/bin/sh
 prefix=@CMAKE_INSTALL_PREFIX@
-libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
 
 usage()
 {
diff --git a/sfcgal.pc.in b/sfcgal.pc.in
index 968cb407..bf517d02 100644
--- a/sfcgal.pc.in
+++ b/sfcgal.pc.in
@@ -1,6 +1,6 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=${prefix}
-libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
 includedir=${prefix}/include
 
 Name: sfcgal