diff --git a/ext/enchant/config.w32 b/ext/enchant/config.w32
index 57a32ee21994..25f088bba472 100644
--- a/ext/enchant/config.w32
+++ b/ext/enchant/config.w32
@@ -18,7 +18,6 @@ if (PHP_ENCHANT == "yes") {
 			EXTENSION("enchant", "enchant.c");
 			AC_DEFINE('HAVE_ENCHANT', 1, 'Have Enchant support', false);
 			AC_DEFINE('HAVE_ENCHANT_GET_VERSION', 1);
-			ADD_FLAG("CFLAG_ENCHANT", "/D _WIN32");
 		}
 	} else {
 		WARNING('Could not find enchant.h; skipping');
diff --git a/ext/zip/config.w32 b/ext/zip/config.w32
index 05bd99e55a30..0b5448c8e895 100644
--- a/ext/zip/config.w32
+++ b/ext/zip/config.w32
@@ -17,7 +17,7 @@ if (PHP_ZIP != "no") {
 		}
 
 		AC_DEFINE('HAVE_ZIP', 1);
-		ADD_FLAG("CFLAGS_ZIP", "/D _WIN32 /D HAVE_SET_MTIME /D HAVE_ENCRYPTION /D HAVE_LIBZIP_VERSION /D HAVE_PROGRESS_CALLBACK /D HAVE_CANCEL_CALLBACK /D HAVE_METHOD_SUPPORTED /D LZMA_API_STATIC");
+		ADD_FLAG("CFLAGS_ZIP", "/D HAVE_SET_MTIME /D HAVE_ENCRYPTION /D HAVE_LIBZIP_VERSION /D HAVE_PROGRESS_CALLBACK /D HAVE_CANCEL_CALLBACK /D HAVE_METHOD_SUPPORTED /D LZMA_API_STATIC");
 	} else {
 		WARNING("zip not enabled; libraries and headers not found");
 	}