diff --git a/icu4c/source/common/ucnv2022.cpp b/icu4c/source/common/ucnv2022.cpp
index 0c12dd0d7b..6d50ae8f08 100644
--- a/icu4c/source/common/ucnv2022.cpp
+++ b/icu4c/source/common/ucnv2022.cpp
@@ -3893,7 +3893,7 @@ static const UConverterStaticData _ISO2022KRStaticData={
     UCNV_IBM,
     UCNV_ISO_2022,
     1,
-    3, /* max 3 bytes per UChar: SO+DBCS */
+    8, /* max 8 bytes per UChar */
     { 0x1a, 0, 0, 0 },
     1,
     FALSE,
diff --git a/icu4c/source/test/cintltst/ccapitst.c b/icu4c/source/test/cintltst/ccapitst.c
index 16c9d9de2c..58fc7fa7cd 100644
--- a/icu4c/source/test/cintltst/ccapitst.c
+++ b/icu4c/source/test/cintltst/ccapitst.c
@@ -2898,7 +2898,7 @@ static void TestLMBCSMaxChar(void) {
         { 4, "HZ"},
 
         { 3, "ISO-2022"},
-        { 3, "ISO-2022-KR"},
+        { 8, "ISO-2022-KR"},
         { 6, "ISO-2022-JP"},
         { 8, "ISO-2022-CN"},