diff --git a/pkg/analyzer/lib/src/diagnostic/diagnostic.g.dart b/pkg/analyzer/lib/src/diagnostic/diagnostic.g.dart
index d70cad4222c..7e11d87415d 100644
--- a/pkg/analyzer/lib/src/diagnostic/diagnostic.g.dart
+++ b/pkg/analyzer/lib/src/diagnostic/diagnostic.g.dart
@@ -3259,10 +3259,12 @@ deferredAfterPrefix = DiagnosticWithoutArgumentsImpl(
 const DiagnosticWithoutArguments deferredImportOfExtension =
     DiagnosticWithoutArgumentsImpl(
       name: 'deferred_import_of_extension',
-      problemMessage: "Imports of deferred libraries must hide all extensions.",
+      problemMessage:
+          "Deferred library imports must hide all extension declarations.",
       correctionMessage:
           "Try adding either a show combinator listing the names you need to "
-          "reference or a hide combinator listing all of the extensions.",
+          "reference or a hide combinator listing all of the extension "
+          "declarations.",
       hasPublishedDocs: true,
       type: DiagnosticType.COMPILE_TIME_ERROR,
       uniqueName: 'deferred_import_of_extension',
diff --git a/pkg/analyzer/messages.yaml b/pkg/analyzer/messages.yaml
index 2d9f5b9cef3..fa1e0893d6e 100644
--- a/pkg/analyzer/messages.yaml
+++ b/pkg/analyzer/messages.yaml
@@ -4527,8 +4527,8 @@ CompileTimeErrorCode:
   deferredImportOfExtension:
     type: compileTimeError
     parameters: none
-    problemMessage: Imports of deferred libraries must hide all extensions.
-    correctionMessage: Try adding either a show combinator listing the names you need to reference or a hide combinator listing all of the extensions.
+    problemMessage: Deferred library imports must hide all extension declarations.
+    correctionMessage: Try adding either a show combinator listing the names you need to reference or a hide combinator listing all of the extension declarations.
     hasPublishedDocs: true
     documentation: |-
       #### Description