diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 2781f4d27d..40586ca23b 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -62,9 +62,9 @@ if(CMAKE_Fortran_COMPILER_ID STREQUAL "GNU")
 
 elseif(CMAKE_Fortran_COMPILER_ID STREQUAL "Intel")
   # Intel Fortran compiler options
-  set(f90flags  "-fpp -warn -assume byterecl -traceback")
+  set(f90flags  "-fpp -std08 -assume byterecl -traceback")
   if(debug)
-    set(f90flags "-g -ftrapuv -fp-stack-check -check all -fpe0 ${f90flags}")
+    set(f90flags "-g -warn -ftrapuv -fp-stack-check -check all -fpe0 ${f90flags}")
     set(ldflags  "-g")
   endif()
   if(profile)