diff --git a/CMakeLists.txt b/CMakeLists.txt
index a31d809..a6c0313 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,7 +7,7 @@ else()
 endif()
 project(c-capnproto LANGUAGES ${languages})
 
-configure_file(c-capnproto.pc.in c-capnproto.pc)
+configure_file(c-capnproto.pc.in c-capnproto.pc @ONLY)
 
 include(CTest)
 
diff --git a/c-capnproto.pc.in b/c-capnproto.pc.in
index 901ecbe..8924d17 100644
--- a/c-capnproto.pc.in
+++ b/c-capnproto.pc.in
@@ -1,8 +1,8 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=${prefix}
-libdir=${@CMAKE_INSTALL_LIBDIR@}
+libdir=${prefix}/lib
 bindir=${prefix}/bin
-includedir=${@CMAKE_INSTALL_INCLUDEDIR@}
+includedir=${prefix}/include
 codegen=${bindir}/capnpc-c
 
 Name: c-capnproto