diff --git a/CMakeLists.txt b/CMakeLists.txt
index ec0bdfd..5c35657 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -90,7 +90,7 @@ configure_file( config.h.cmake config.h @ONLY )
 set( prefix ${CMAKE_INSTALL_PREFIX} )
 string( REGEX REPLACE "^${CMAKE_INSTALL_PREFIX}" "\${prefix}" PC_EXEC_PREFIX ${EXEC_INSTALL_PREFIX} )
 string( REGEX REPLACE "^${CMAKE_INSTALL_PREFIX}" "\${prefix}" PC_INCLUDE_DIR ${TQT_INCLUDES_DIR}    )
-string( REGEX REPLACE "^${CMAKE_INSTALL_PREFIX}" "\${prefix}" PC_LIB_DIR     ${TQT_LIBDIR}          )
+string( REGEX REPLACE "^${CMAKE_INSTALL_PREFIX}" "\${prefix}" PC_LIB_DIR     ${LIB_INSTALL_DIR}     )
 
 configure_file( qscintilla.pc.cmake qscintilla.pc @ONLY )
 
diff --git a/qt/CMakeLists.txt b/qt/CMakeLists.txt
index 865d3b1..bf53a40 100644
--- a/qt/CMakeLists.txt
+++ b/qt/CMakeLists.txt
@@ -55,7 +55,7 @@ tde_add_library( qscintilla SHARED AUTOMOC
 
   VERSION 7.0.1
 
-  DESTINATION ${TQT_LIBDIR}
+  DESTINATION ${LIB_INSTALL_DIR}
 )