diff --git a/CMakeLists.txt b/CMakeLists.txt
index 09dcb2b..2e407e9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -55,7 +55,7 @@ if (NETCDF)
   target_include_directories(pumgen PUBLIC ${NetCDF_INCLUDE_DIRS})
   target_link_libraries(pumgen PUBLIC ${NetCDF_LIBRARY})
   target_compile_definitions(pumgen PUBLIC USE_NETCDF)
-  set(INSTALL_RPATH ${NetCDF_LIBRARY_DIR})
+  set(INSTALL_RPATH "${NetCDF_LIBRARY_DIR}")
 endif()
 
 set(HDF5_PREFER_PARALLEL True)
@@ -125,5 +125,5 @@ target_compile_definitions(pumgen PUBLIC LOG_LEVEL=${LOG_LEVEL})
 if(SIMMETRIX)
   set(INSTALL_RPATH "${SIM_PS_KRNL_LIB_DIR}:${INSTALL_RPATH}")
 endif()
-set_target_properties(pumgen PROPERTIES INSTALL_RPATH ${INSTALL_RPATH})
+set_target_properties(pumgen PROPERTIES INSTALL_RPATH "${INSTALL_RPATH}")
 install(TARGETS pumgen RUNTIME DESTINATION bin DESTINATION ${CMAKE_INSTALL_BINDIR})