diff --git a/Build/makefile b/Build/makefile
index 677b66d37f8..819eae6e694 100644
--- a/Build/makefile
+++ b/Build/makefile
@@ -355,7 +355,7 @@ ompi_gnu_linux : obj = fds_ompi_gnu_linux
 ompi_gnu_linux : setup $(obj_mpi)
 	$(FCOMPL) $(FFLAGS) $(FOPENMPFLAGS) -o $(obj) $(obj_mpi) $(LFLAGSMKL)
 
-ompi_gnu_linux_db : FFLAGS = -O0 -std=f2018 -ggdb -Wall -Werror -Wunused-parameter -Wcharacter-truncation -Wno-target-lifetime -fcheck=all -fbacktrace -ffpe-trap=invalid,zero,overflow -frecursive -ffpe-summary=none -fall-intrinsics -fbounds-check $(GITINFOGNU) $(FFLAGSMKL) $(GFORTRAN_OPTIONS) $(FFLAGS_HYPRE) $(FFLAGS_SUNDIALS)
+ompi_gnu_linux_db : FFLAGS = -O0 -std=f2018 -ggdb -finit-real=snan -finit-integer=-999999 -Wall -Werror -Wunused-parameter -Wcharacter-truncation -Wno-target-lifetime -fcheck=all -fbacktrace -ffpe-trap=invalid,zero,overflow -frecursive -ffpe-summary=none -fall-intrinsics -fbounds-check $(GITINFOGNU) $(FFLAGSMKL) $(GFORTRAN_OPTIONS) $(FFLAGS_HYPRE) $(FFLAGS_SUNDIALS)
 ompi_gnu_linux_db : LFLAGSMKL = $(LFLAGSMKL_GNU_OPENMP) $(LFLAGS_HYPRE) $(LFLAGS_SUNDIALS)
 ompi_gnu_linux_db : FCOMPL = $(COMP_FC)
 ompi_gnu_linux_db : FOPENMPFLAGS = -fopenmp