diff --git a/CMakeLists.txt b/CMakeLists.txt
index f18161d9..a6321672 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1394,9 +1394,9 @@ file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/liblzma-config.cmake"
 
 # Create liblzma.pc.
 set(prefix "${CMAKE_INSTALL_PREFIX}")
-set(exec_prefix "${CMAKE_INSTALL_PREFIX}")
-set(libdir "${CMAKE_INSTALL_FULL_LIBDIR}")
-set(includedir "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
+set(exec_prefix "\${prefix}")
+set(libdir "\${exec_prefix}/${CMAKE_INSTALL_LIBDIR}")
+set(includedir "\${prefix}/${CMAKE_INSTALL_INCLUDEDIR}")
 set(PTHREAD_CFLAGS "${CMAKE_THREAD_LIBS_INIT}")
 configure_file(src/liblzma/liblzma.pc.in liblzma.pc
                @ONLY