diff --git a/Makefile.Defines b/Makefile.Defines
index 70069bb71..291f2c604 100644
--- a/Makefile.Defines
+++ b/Makefile.Defines
@@ -65,13 +65,13 @@ GPAR = -fopenmp -ftree-parallelize-loops=4
 GMEM = -fsanitize=undefined -fsanitize=address -fsanitize=leak 
 GWARNINGS = -Wall -Warray-bounds  -Wimplicit-interface -Wextra -Warray-temporaries
 
-#FFLAGS  = $(IDEBUG) $(HEAPARR)
+FFLAGS  = $(IDEBUG) $(HEAPARR)
 #FFLAGS  = -init=snan,arrays -no-wrap-margin -O3 $(STRICTREAL) $(SIMDVEC) $(PAR) 
-#FORTRAN = ifort
+FORTRAN = ifort
 #AR     = xiar
 
-FORTRAN = gfortran
-FFLAGS =  -ffree-line-length-none $(GDEBUG) $(GMEM)
+#FORTRAN = gfortran
+#FFLAGS =  -ffree-line-length-none $(GDEBUG) $(GMEM)
 AR     = ar
 
 # DO NOT include in CFLAGS the "-c" option to compile object only