diff --git a/liborigin.pc.in b/liborigin.pc.in
index 80cd898..69d6b8f 100644
--- a/liborigin.pc.in
+++ b/liborigin.pc.in
@@ -1,7 +1,7 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=${prefix}
-libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
 
 Name: liborigin
 Description: Library for reading OriginLab files