diff --git a/dlls/adsldp/schema.c b/dlls/adsldp/schema.c
index 7f1f193bea843efce09dc444181097953ac8c61b..0611dc2920c6aa7b42de9202912ebad3882ed522 100644
--- a/dlls/adsldp/schema.c
+++ b/dlls/adsldp/schema.c
@@ -95,6 +95,8 @@ ADSTYPEENUM get_schema_type(const WCHAR *name, const struct attribute_type *at,
         return ADSTYPE_CASE_IGNORE_STRING;
     if (!wcscmp(type->syntax, L"1.3.6.1.4.1.1466.115.121.1.24"))
         return ADSTYPE_UTC_TIME;
+    if (!wcscmp(type->syntax, L"1.3.6.1.4.1.1466.115.121.1.26"))
+        return ADSTYPE_CASE_EXACT_STRING;
     if (!wcscmp(type->syntax, L"1.3.6.1.4.1.1466.115.121.1.27"))
         return ADSTYPE_INTEGER;
     if (!wcscmp(type->syntax, L"1.3.6.1.4.1.1466.115.121.1.38"))