diff --git a/src/makeg95.env b/src/makeg95.env
index 32a6cb9226..149b18b3cb 100644
--- a/src/makeg95.env
+++ b/src/makeg95.env
@@ -87,7 +87,7 @@ RCDEFSWITCH=--define
 
 # Don't make this too long (e.g. by adding contrib/include/wx) because it will
 # truncate the command line
-RESFLAGS=$(RCPREPROCESSOR) $(RCINCSWITCH) $(WXDIR)/include $(RCEXTRAINC) $(RCDEFSWITCH) __WIN32__ $(RCDEFSWITCH) __WIN95__ $(RCDEFSWITCH) __GNUWIN32__
+RESFLAGS=--use-temp-file $(RCPREPROCESSOR) $(RCINCSWITCH) $(WXDIR)/include $(RCEXTRAINC) $(RCDEFSWITCH) __WIN32__ $(RCDEFSWITCH) __WIN95__ $(RCDEFSWITCH) __GNUWIN32__
 
 # Needed to build a DLL if your linker does not support --shared option.
 AS = $(CROSS)as