diff --git a/src/mred/gc2/Makefile.in b/src/mred/gc2/Makefile.in
index c453604e6f..edb202f6aa 100644
--- a/src/mred/gc2/Makefile.in
+++ b/src/mred/gc2/Makefile.in
@@ -610,7 +610,7 @@ wx_xbm.@LTO@: xsrc/wx_xbm.cc
 
 # Mac -----------------------------------------
 
-MACXFLAG = -Wno-long-double
+MACXFLAG =
 
 precomp.@LTO@ : macxsrc/xform_precomp.h $(srcdir)/precomp.cxx
 	$(CXX) $(MACXFLAG) -Imacxsrc --dump-pch . -o precomp.@LTO@ -c $(srcdir)/precomp.cxx