--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -174,7 +174,7 @@
 set(prefix "${CMAKE_INSTALL_PREFIX}")
 set(exec_prefix \${prefix})
 set(includedir \${prefix}/include)
-set(libdir \${exec_prefix}/lib)
+set(libdir \${exec_prefix}/${CMAKE_INSTALL_LIBDIR})
 
 CONFIGURE_FILE(
     ${CMAKE_CURRENT_SOURCE_DIR}/librtlsdr.pc.in