diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1e2a433..c8c6725 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,13 +37,13 @@ ADD_DEFINITIONS(-DGIT_VERSION=\"${VERSION}\")
 option(ENABLE_RPATH "Enable rpath support on Linux and Mac" ON)
 if(NOT CMAKE_INSTALL_RPATH)
   # the RPATH to be used when installing, but only if it's not a system directory
-  LIST(FIND CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES "${CMAKE_INSTALL_PREFIX}/lib" isSystemDir)
+  LIST(FIND CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES "${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX}" isSystemDir)
   IF("${isSystemDir}" STREQUAL "-1")
-    SET(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
+    SET(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX}")
   ENDIF("${isSystemDir}" STREQUAL "-1")
 endif()
 if(APPLE AND NOT CMAKE_INSTALL_NAME_DIR)
-  set(CMAKE_INSTALL_NAME_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+  set(CMAKE_INSTALL_NAME_DIR "${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX}")
 endif()
 if(UNIX AND ENABLE_RPATH)
   set(CMAKE_SKIP_BUILD_RPATH FALSE)
@@ -59,7 +59,7 @@ SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${openEMS_SOURCE_DIR}/cmake/Modules/
 # SET(FPARSER_ROOT_DIR ~/opt/openEMS)
 find_library(fparser_LIBRARIES 
   NAMES fparser
-  HINTS ${FPARSER_ROOT_DIR}/lib
+  HINTS ${FPARSER_ROOT_DIR}/lib${LIB_SUFFIX}
   NO_CMAKE_FIND_ROOT_PATH
 )
 message(STATUS "fparser: ${fparser_LIBRARIES}" )
@@ -71,7 +71,7 @@ INCLUDE_DIRECTORIES( ${FPARSER_ROOT_DIR}/include )
 # SET(CSXCAD_ROOT_DIR ~/opt/openEMS)
 find_library(CSXCAD_LIBRARIES 
   NAMES CSXCAD
-  HINTS ${CSXCAD_ROOT_DIR}/lib
+  HINTS ${CSXCAD_ROOT_DIR}/lib${LIB_SUFFIX}
   NO_CMAKE_FIND_ROOT_PATH
 )
 message(STATUS "CSXCAD_LIBRARIES: ${CSXCAD_LIBRARIES}" )