diff --git a/src/port/win32env.c b/src/port/win32env.c
index d6b0ebe7e5..e64065ca29 100644
--- a/src/port/win32env.c
+++ b/src/port/win32env.c
@@ -70,7 +70,7 @@ pgwin32_putenv(const char *envval)
 			"msvcr120", 0, NULL
 		},						/* Visual Studio 2013 */
 		{
-			"urctbase", 0, NULL
+			"ucrtbase", 0, NULL
 		},						/* Visual Studio 2015 and later */
 		{
 			NULL, 0, NULL