Index: win/rules.vc
===================================================================
diff -u -rccc0e58c0aa5a545fbc1efe2063b621878c0fcb9 -ra7d6bf4bd41657179e27d0b7307f42eb0cfd2ce0
--- win/rules.vc	(.../rules.vc)	(revision ccc0e58c0aa5a545fbc1efe2063b621878c0fcb9)
+++ win/rules.vc	(.../rules.vc)	(revision a7d6bf4bd41657179e27d0b7307f42eb0cfd2ce0)
@@ -433,7 +433,7 @@
 # Set our defines now armed with our options.
 #----------------------------------------------------------
 
-OPTDEFINES	= -DTCL_CFGVAL_ENCODING=$(CFG_ENCODING) -DSTDC_HEADERS -D
+OPTDEFINES	= -DTCL_CFGVAL_ENCODING=$(CFG_ENCODING) -DSTDC_HEADERS
 
 !if $(TCL_MEM_DEBUG)
 OPTDEFINES	= $(OPTDEFINES) -DTCL_MEM_DEBUG