diff --git a/icu4c/source/test/intltest/nmfmtrt.cpp b/icu4c/source/test/intltest/nmfmtrt.cpp
index 54226a54710..a4d1e78e57c 100644
--- a/icu4c/source/test/intltest/nmfmtrt.cpp
+++ b/icu4c/source/test/intltest/nmfmtrt.cpp
@@ -123,7 +123,7 @@ NumberFormatRoundTripTest::start()
         logln("Quick mode: only testing first 5 Locales");
     }
     for(int i = 0; i < locCount; ++i) {
-        if (uprv_strcmp(loc[i].getLanguage(),"ccp")==0 && logKnownIssue("13366", "Skip handling ccp until NumberFormat parsing is fixed")) {
+        if (uprv_strcmp(loc[i].getLanguage(),"ccp")==0 && logKnownIssue("13391", "Skip handling ccp until NumberFormat parsing is fixed")) {
             continue;
         }
         UnicodeString name;
diff --git a/icu4c/source/test/intltest/tsnmfmt.cpp b/icu4c/source/test/intltest/tsnmfmt.cpp
index e326f556cba..924ae2d2988 100644
--- a/icu4c/source/test/intltest/tsnmfmt.cpp
+++ b/icu4c/source/test/intltest/tsnmfmt.cpp
@@ -442,7 +442,7 @@ void IntlTestNumberFormat::monsterTest(/* char* par */)
         }
         for (int32_t i=0; i<count; ++i)
         {
-            if (uprv_strcmp(locales[i].getLanguage(),"ccp")==0 && logKnownIssue("13366", "Skip handling ccp until NumberFormat parsing is fixed")) {
+            if (uprv_strcmp(locales[i].getLanguage(),"ccp")==0 && logKnownIssue("13391", "Skip handling ccp until NumberFormat parsing is fixed")) {
                 continue;
             }
             UnicodeString name(locales[i].getName(), "");
diff --git a/icu4c/source/test/intltest/tzfmttst.cpp b/icu4c/source/test/intltest/tzfmttst.cpp
index b2f7c4b5dab..4613d5e1a92 100644
--- a/icu4c/source/test/intltest/tzfmttst.cpp
+++ b/icu4c/source/test/intltest/tzfmttst.cpp
@@ -172,7 +172,7 @@ TimeZoneFormatTest::TestTimeZoneRoundTrip(void) {
         for (int32_t patidx = 0; patidx < UPRV_LENGTHOF(PATTERNS); patidx++) {
 
             if (uprv_strcmp(LOCALES[locidx].getLanguage(),"ccp")==0 && (PATTERNS[patidx][0]==0x7A || PATTERNS[patidx][0]==0x76) && 
-                    logKnownIssue("13366", "Skip handling ccp until TimeZone offset roundtrip is fixed")) {
+                    logKnownIssue("13390", "Skip handling ccp until TimeZone offset roundtrip is fixed")) {
                  continue;
             }
             SimpleDateFormat *sdf = new SimpleDateFormat((UnicodeString)PATTERNS[patidx], LOCALES[locidx], status);