diff --git a/sdk/lib/convert/utf.dart b/sdk/lib/convert/utf.dart
index 163ec82b298..c19bb37e90b 100644
--- a/sdk/lib/convert/utf.dart
+++ b/sdk/lib/convert/utf.dart
@@ -493,6 +493,7 @@ class _Utf8Decoder {
   static const int errorSurrogate = E6;
   static const int errorUnfinished = E7;
 
+  @pragma("vm:prefer-inline")
   static bool isErrorState(int state) => (state & 1) != 0;
 
   static String errorDescription(int state) {
diff --git a/sdk_nnbd/lib/convert/utf.dart b/sdk_nnbd/lib/convert/utf.dart
index 69f490fa23b..c74f918cfb7 100644
--- a/sdk_nnbd/lib/convert/utf.dart
+++ b/sdk_nnbd/lib/convert/utf.dart
@@ -494,6 +494,7 @@ class _Utf8Decoder {
   static const int errorSurrogate = E6;
   static const int errorUnfinished = E7;
 
+  @pragma("vm:prefer-inline")
   static bool isErrorState(int state) => (state & 1) != 0;
 
   static String errorDescription(int state) {