diff --git a/win32/build/confutils.js b/win32/build/confutils.js
index 47fca332a34..95a4e5ce3c1 100644
--- a/win32/build/confutils.js
+++ b/win32/build/confutils.js
@@ -3241,7 +3241,7 @@ function toolset_setup_common_cflags()
 	var envCFLAGS = WshShell.Environment("PROCESS").Item("CFLAGS");
 
 	// CFLAGS for building the PHP dll
-	DEFINE("CFLAGS_PHP", "/D _USRDLL /D PHP7DLLTS_EXPORTS /D PHP_EXPORTS \
+	DEFINE("CFLAGS_PHP", "/D _USRDLL /D PHP_EXPORTS \
 	/D LIBZEND_EXPORTS /D TSRM_EXPORTS /D SAPI_EXPORTS /D WINVER=" + WINVER);
 
 	DEFINE('CFLAGS_PHP_OBJ', '$(CFLAGS_PHP) $(STATIC_EXT_CFLAGS)');