diff --git a/Makefile.Defines b/Makefile.Defines
index 3789bb8a8..b0c956c85 100644
--- a/Makefile.Defines
+++ b/Makefile.Defines
@@ -68,14 +68,15 @@ GPRODUCTION = -O2 -ffree-line-length-none $(GPAR)
 
 #FFLAGS  = $(IDEBUG) $(SIMDVEC) $(PAR)
 #FFASTFLAGS  = $(IDEBUG) $(SIMDVEC) $(PAR)
-FSTRICTFLAGS = $(IPRODUCTION) $(STRICTREAL) $(OPTREPORT)  #$(ADVIXE_FLAGS)
-FFLAGS = $(IPRODUCTION) -fp-model=fast $(OPTREPORT)  #$(ADVIXE_FLAGS)
-FORTRAN = ifort
+#FSTRICTFLAGS = $(IPRODUCTION) $(STRICTREAL) $(OPTREPORT)  #$(ADVIXE_FLAGS)
+#FFLAGS = $(IPRODUCTION) -fp-model=fast $(OPTREPORT)  #$(ADVIXE_FLAGS)
+#FORTRAN = ifort
 AR     = xiar
 
-#FORTRAN = gfortran
+FORTRAN = gfortran
 #FFLAGS =  $(GDEBUG) # $(GMEM) $(GPAR)
-#FFLAGS =  $(GPRODUCTION) -g -fbacktrace #-fcheck=all #-Wall AR     = ar # DO NOT include in CFLAGS the "-c" option to compile object only
+FFLAGS =  $(GPRODUCTION) #-fcheck=all #-Wall AR     = ar # DO NOT include in CFLAGS the "-c" option to compile object only
+FSTRICTFLAGS = $(FFLAGS)
 # this is done explicitly as needed in the Makefile
 
 CC              = icc