diff --git a/samples/makefile.b32 b/samples/makefile.b32
index 016366de3d..7842436642 100644
--- a/samples/makefile.b32
+++ b/samples/makefile.b32
@@ -46,7 +46,7 @@ OUTPUTDIR=$(WXDIR)\BORL
 !endif
 
 
-MAKEFLAGS=FINAL=$(FINAL) WXUSINGDLL=$(WXUSINGDLL) OUTPUTDIR=$(OUTPUTDIR) EXEDIR=$(EXEDIR)
+MAKEFLAGS=-DFINAL=$(FINAL) -DWXUSINGDLL=$(WXUSINGDLL) -DOUTPUTDIR=$(OUTPUTDIR) -DEXEDIR=$(EXEDIR)
 
 
 #