diff --git a/Build/makefile b/Build/makefile
index fc40fa7b62f..4abd2f3955e 100644
--- a/Build/makefile
+++ b/Build/makefile
@@ -13,7 +13,7 @@ VPATH = ../Source
 
 # set compiler type
 
-I_IFORT=ifort
+I_IFORT=ifx
 ifdef INTEL_IFORT
    I_IFORT=$(INTEL_IFORT)
 endif
@@ -241,14 +241,14 @@ impi_intel_win_openmp_db : setup_win $(objwin_mpi)
 
 impi_intel_linux : FFLAGS = -m64 -fc=$(I_IFORT) -O2 -ipo -no-wrap-margin $(GITINFO) $(FFLAGSMKL_INTEL) $(FFLAGS_HYPRE) $(FFLAGS_SUNDIALS) -DUSE_IFPORT  -diag-disable=10448
 impi_intel_linux : LFLAGSMKL = $(LFLAGSMKL_INTEL) $(LFLAGS_HYPRE) $(LFLAGS_SUNDIALS)
-impi_intel_linux : FCOMPL = mpiifort
+impi_intel_linux : FCOMPL = mpiifx
 impi_intel_linux : obj = fds_impi_intel_linux
 impi_intel_linux : setup $(obj_mpi)
 	$(FCOMPL) $(FFLAGS) -o $(obj) $(obj_mpi) $(LFLAGSMKL)
 
 impi_intel_linux_openmp : FFLAGS = -m64 -fc=$(I_IFORT) -O2 -ipo -no-wrap-margin $(GITINFO) $(FFLAGSMKL_INTEL) $(FFLAGS_HYPRE) $(FFLAGS_SUNDIALS) -DUSE_IFPORT -diag-disable=10448_INTEL
 impi_intel_linux_openmp : LFLAGSMKL = $(LFLAGSMKL_INTEL_OPENMP) $(LFLAGS_HYPRE) $(LFLAGS_SUNDIALS)
-impi_intel_linux_openmp : FCOMPL = mpiifort
+impi_intel_linux_openmp : FCOMPL = mpiifx
 impi_intel_linux_openmp : FOPENMPFLAGS = -qopenmp
 impi_intel_linux_openmp : obj = fds_impi_intel_linux_openmp
 impi_intel_linux_openmp : setup $(obj_mpi)
@@ -256,14 +256,14 @@ impi_intel_linux_openmp : setup $(obj_mpi)
 
 impi_intel_linux_db : FFLAGS = -m64 -fc=$(I_IFORT) -check all -warn all -diag-error=remark,warn,error -O0 -g -traceback -fpe0 -nofltconsistency -stand:f18 -no-wrap-margin $(GITINFO) $(FFLAGSMKL_INTEL) $(FFLAGS_HYPRE) $(FFLAGS_SUNDIALS) -DUSE_IFPORT -diag-disable=10448_INTEL
 impi_intel_linux_db : LFLAGSMKL = $(LFLAGSMKL_INTEL) $(LFLAGS_HYPRE) $(LFLAGS_SUNDIALS)
-impi_intel_linux_db : FCOMPL = mpiifort
+impi_intel_linux_db : FCOMPL = mpiifx
 impi_intel_linux_db : obj = fds_impi_intel_linux_db
 impi_intel_linux_db : setup $(obj_mpi)
 	$(FCOMPL) $(FFLAGS) -o $(obj) $(obj_mpi) $(LFLAGSMKL)
 
 impi_intel_linux_openmp_db : FFLAGS = -m64 -fc=$(I_IFORT) -check all -warn all -diag-error=remark,warn,error -O0 -g -traceback -fpe0 -nofltconsistency -stand:f18 -no-wrap-margin $(GITINFO) $(FFLAGSMKL_INTEL) $(FFLAGS_HYPRE) $(FFLAGS_SUNDIALS) -DUSE_IFPORT  -diag-disable=10448
 impi_intel_linux_openmp_db : LFLAGSMKL = $(LFLAGSMKL_INTEL_OPENMP) $(LFLAGS_HYPRE) $(LFLAGS_SUNDIALS)
-impi_intel_linux_openmp_db : FCOMPL = mpiifort
+impi_intel_linux_openmp_db : FCOMPL = mpiifx
 impi_intel_linux_openmp_db : FOPENMPFLAGS = -qopenmp
 impi_intel_linux_openmp_db : obj = fds_impi_intel_linux_openmp_db
 impi_intel_linux_openmp_db : setup $(obj_mpi)
@@ -271,14 +271,14 @@ impi_intel_linux_openmp_db : setup $(obj_mpi)
 
 impi_intel_linux_dv : FFLAGS = -m64 -fc=$(I_IFORT) -warn unused -O1 -g -traceback -no-wrap-margin $(GITINFO) $(FFLAGSMKL_INTEL) $(FFLAGS_HYPRE) $(FFLAGS_SUNDIALS) -DUSE_IFPORT  -diag-disable=10448
 impi_intel_linux_dv : LFLAGSMKL = $(LFLAGSMKL_INTEL) $(LFLAGS_HYPRE) $(LFLAGS_SUNDIALS)
-impi_intel_linux_dv : FCOMPL = mpiifort
+impi_intel_linux_dv : FCOMPL = mpiifx
 impi_intel_linux_dv : obj = fds_impi_intel_linux_dv
 impi_intel_linux_dv : setup $(obj_mpi)
 	$(FCOMPL) $(FFLAGS) -o $(obj) $(obj_mpi) $(LFLAGSMKL)
 
 impi_intel_linux_openmp_dv : FFLAGS = -m64 -fc=$(I_IFORT) -warn unused -O1 -g -traceback -no-wrap-margin $(GITINFO) $(FFLAGSMKL_INTEL) $(FFLAGS_HYPRE) $(FFLAGS_SUNDIALS) -DUSE_IFPORT  -diag-disable=10448
 impi_intel_linux_openmp_dv : LFLAGSMKL = $(LFLAGSMKL_INTEL_OPENMP) $(LFLAGS_HYPRE) $(LFLAGS_SUNDIALS)
-impi_intel_linux_openmp_dv : FCOMPL = mpiifort
+impi_intel_linux_openmp_dv : FCOMPL = mpiifx
 impi_intel_linux_openmp_dv : FOPENMPFLAGS = -qopenmp
 impi_intel_linux_openmp_dv : obj = fds_impi_intel_linux_openmp_dv
 impi_intel_linux_openmp_dv : setup $(obj_mpi)