diff --git a/lib/vauth/digest_sspi.c b/lib/vauth/digest_sspi.c
index cc2c5b2fee..29526fc64d 100644
--- a/lib/vauth/digest_sspi.c
+++ b/lib/vauth/digest_sspi.c
@@ -37,7 +37,7 @@
 #include "curl_multibyte.h"
 #include "sendf.h"
 #include "strdup.h"
-#include "rawstr.h"
+#include "strcase.h"
 
 /* The last #include files should be: */
 #include "curl_memory.h"