diff --git a/Makefile.Defines b/Makefile.Defines
index 820ad6d7d..4a283b655 100644
--- a/Makefile.Defines
+++ b/Makefile.Defines
@@ -66,7 +66,7 @@ GMEM = -fsanitize=undefined -fsanitize=address -fsanitize=leak
 GWARNINGS = -Wall -Warray-bounds  -Wimplicit-interface -Wextra -Warray-temporaries
 
 #FFLAGS  = $(IDEBUG) $(HEAPARR)
-FFLAGS  = -init=snan,arrays -no-wrap-margin -O3 $(STRICTREAL) $(SIMDVEC) $(PAR) 
+FFLAGS  = -init=snan,arrays -no-wrap-margin -O3 $(STRICTREAL) $(SIMDVEC) $(PAR) $(HEAPARR)
 FORTRAN = ifort
 #AR     = xiar