diff --git a/icu4c/source/test/intltest/dtptngts.cpp b/icu4c/source/test/intltest/dtptngts.cpp
index 19c737ea03d4..f780271bdec5 100644
--- a/icu4c/source/test/intltest/dtptngts.cpp
+++ b/icu4c/source/test/intltest/dtptngts.cpp
@@ -1602,6 +1602,8 @@ void IntlTestDateTimePatternGeneratorAPI::testBestPattern() {
         { "en_GB@calendar=coptic",   "yMd", u"dd/MM/y GGGGG"    },
         { "en_GB@calendar=japanese", "yMd", u"dd/MM/y GGGGG"    },
         { "en_GB@calendar=buddhist", "yMd", u"dd/MM/y GGGGG"    },
+        // ICU-22757: Not inheriting availableFormats patterns from root
+        { "sv_SE",                   "yMd", u"y-MM-dd"          },
         // ICU-20992: Bad patterns for missing fields
         { "ckb_IR",     "mmSSS",       u"mm:ss\u066bSSS"     },
         { "ckb_IR",     "BSSS",        u"SSS \u251c'Dayperiod': B\u2524" },