diff --git a/cmake/ecwam_compile_flags.cmake b/cmake/ecwam_compile_flags.cmake
index f4685757..d5a37b2e 100644
--- a/cmake/ecwam_compile_flags.cmake
+++ b/cmake/ecwam_compile_flags.cmake
@@ -31,6 +31,7 @@ elseif(CMAKE_Fortran_COMPILER_ID MATCHES "Intel")
   set(vectorization_flags "-march=core-avx2 -no-fma")
   set(fpmodel_flags       "-fp-model precise -fp-speculation=safe")
   set(transcendentals_flags "-fast-transcendentals")
+  set(heap_arrays_flags   "-heap-arrays 32")
 
 elseif(CMAKE_Fortran_COMPILER_ID MATCHES "PGI|NVHPC")
   set(autopromote_flags   "-r8")
@@ -58,6 +59,9 @@ endif()
 if( DEFINED transcendentals_flags )
   ecbuild_add_fortran_flags( "${transcendentals_flags}"   NAME transcendentals )
 endif()
+if( DEFINED heap_arrays_flags )
+  ecbuild_add_fortran_flags( "${heap_arrays_flags}"   NAME heap_arrays )
+endif()
 
 if( CMAKE_BUILD_TYPE MATCHES "Debug" )
   foreach( debug_flag    fpe initsnan checkbounds )