diff --git a/CMakeLists.txt b/CMakeLists.txt
index 524236dc..6b55b1a0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -492,13 +492,15 @@ if (COOLPROP_OCTAVE_MODULE)
   if (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
     # We need to see which library to link with on OSX - clang++ or stdc++
     execute_process(COMMAND "otool -L ${OCTAVE_OCTAVE_LIB} | grep libc++" OUTPUT_VARIABLE COOLPROP_OCTAVE_USING_CLANG)
-    string(STRIP ${COOLPROP_OCTAVE_USING_CLANG} COOLPROP_OCTAVE_USING_CLANG)
-    STRING(LENGTH ${COOLPROP_OCTAVE_USING_CLANG} LEN)
+    MESSAGE(STATUS "COOLPROP_OCTAVE_USING_CLANG = ${COOLPROP_OCTAVE_USING_CLANG}")
+    string(STRIP "${COOLPROP_OCTAVE_USING_CLANG}" COOLPROP_OCTAVE_USING_CLANG)
+    STRING(LENGTH "${COOLPROP_OCTAVE_USING_CLANG}" LEN)
     if (LEN GREATER 0)
       message(STATUS "Using -stdlib=libc++")
       set_target_properties(CoolProp PROPERTIES LINK_FLAGS "-stdlib=libc++")
     else()
       message(STATUS "Using -stdlib=libstdc++")
+      set_target_properties(CoolProp PROPERTIES LINK_FLAGS "-stdlib=libstdc++")
     endif()
   endif()