diff --git a/CMakeLists.txt b/CMakeLists.txt
index ac0c1fb6..fef018f3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1095,7 +1095,7 @@ macro(CBF_APPEND_TEST_ENVIRONMENT TESTNAME)
     ELSE(APPLE)
       set( xrpathname "LD_LIBRARY_PATH" )
     ENDIF(APPLE)
-    set (xrpath "${HDF5_INSTALL_DIR}/lib;$ENV{${xrpathname})
+    set (xrpath "${HDF5_INSTALL_DIR}/lib;$ENV{${xrpathname}")
   ENDIF(WIN32)
   set_property(TEST ${TESTNAME} APPEND PROPERTY ENVIRONMENT "$xrpathname=${xrpath}")
 endmacro(CBF_APPEND_TEST_ENVIRONMENT TESTNAME)