diff --git a/platform/analysis-api/src/com/intellij/codeInspection/LocalInspectionTool.java b/platform/analysis-api/src/com/intellij/codeInspection/LocalInspectionTool.java
index 562bf10626e7..f2e760b997b3 100644
--- a/platform/analysis-api/src/com/intellij/codeInspection/LocalInspectionTool.java
+++ b/platform/analysis-api/src/com/intellij/codeInspection/LocalInspectionTool.java
@@ -16,6 +16,11 @@ import java.util.regex.Pattern;
 
 /**
  * Base class for local inspections.
+ * <p/>
+ * You can make your inspection dumb-aware by marking it with {@link com.intellij.openapi.project.DumbAware DumbAware} interface.
+ * Such an inspection must not use indexes during its inference, or it must be prepared to catch
+ * {@link com.intellij.openapi.project.IndexNotReadyException IndexNotReadyException}.
+ * In this case, the inspection shall just silently catch it and not report any warnings.
  *
  * @see <a href="https://plugins.jetbrains.com/docs/intellij/code-inspections.html">Code Inspections (IntelliJ Platform Docs)</a>
  * @see GlobalInspectionTool
diff --git a/platform/analysis-impl/src/com/intellij/codeInspection/ex/LocalInspectionToolWrapper.java b/platform/analysis-impl/src/com/intellij/codeInspection/ex/LocalInspectionToolWrapper.java
index f33a9c0a11e3..e27ff800f00b 100644
--- a/platform/analysis-impl/src/com/intellij/codeInspection/ex/LocalInspectionToolWrapper.java
+++ b/platform/analysis-impl/src/com/intellij/codeInspection/ex/LocalInspectionToolWrapper.java
@@ -54,7 +54,7 @@ public class LocalInspectionToolWrapper extends InspectionToolWrapper<LocalInspe
   }
 
   public boolean isDumbAware() {
-    return myEP == null ? getTool().isDumbAware() : myEP.dumbAware;
+    return getTool().isDumbAware();
   }
 
   public static @Nullable InspectionToolWrapper<?, ?> findTool2RunInBatch(@NotNull Project project,
diff --git a/platform/lang-impl/src/com/intellij/codeInsight/daemon/impl/LocalInspectionsPass.java b/platform/lang-impl/src/com/intellij/codeInsight/daemon/impl/LocalInspectionsPass.java
index 1c38ad4c9f6d..09c9e92566b6 100644
--- a/platform/lang-impl/src/com/intellij/codeInsight/daemon/impl/LocalInspectionsPass.java
+++ b/platform/lang-impl/src/com/intellij/codeInsight/daemon/impl/LocalInspectionsPass.java
@@ -105,7 +105,8 @@ final class LocalInspectionsPass extends ProgressableTextEditorHighlightingPass
     List<? extends LocalInspectionToolWrapper> activeToolWrappers;
     List<? extends LocalInspectionToolWrapper> disabledSmartOnlyToolWrappers;
     if (isDumbMode()) {
-      activeToolWrappers = ContainerUtil.filter(toolWrappers, wrapper -> wrapper.isDumbAware());
+      activeToolWrappers = toolWrappers.stream().parallel().filter(wrapper -> wrapper.isDumbAware()).toList();
+
       if (activeToolWrappers.isEmpty()) {
         disabledSmartOnlyToolWrappers = toolWrappers;
       }
diff --git a/plugins/grazie/resources/META-INF/plugin.xml b/plugins/grazie/resources/META-INF/plugin.xml
index d36d78b475a0..0c7f0d16c254 100644
--- a/plugins/grazie/resources/META-INF/plugin.xml
+++ b/plugins/grazie/resources/META-INF/plugin.xml
@@ -46,7 +46,7 @@
     <!-- getDisplayName is overridden in GrazieInspection itself! Placeholder is required to suppress validation. -->
     <localInspection bundle="messages.GrazieBundle" groupKey="grazie.group.name" enabledByDefault="true" shortName="GrazieInspection"
                      implementationClass="com.intellij.grazie.ide.inspection.grammar.GrazieInspection"
-                     level="GRAMMAR_ERROR" key="grazie.grammar.inspection.grammar.text" dumbAware="true"/>
+                     level="GRAMMAR_ERROR" key="grazie.grammar.inspection.grammar.text"/>
 
     <localInspection bundle="messages.GrazieBundle" groupKey="grazie.group.name" enabledByDefault="true" shortName="LanguageDetectionInspection"
                      implementationClass="com.intellij.grazie.ide.inspection.detection.LanguageDetectionInspection"
diff --git a/spellchecker/src/META-INF/SpellCheckerPlugin.xml b/spellchecker/src/META-INF/SpellCheckerPlugin.xml
index 487a3476c09a..795533594a82 100644
--- a/spellchecker/src/META-INF/SpellCheckerPlugin.xml
+++ b/spellchecker/src/META-INF/SpellCheckerPlugin.xml
@@ -24,7 +24,7 @@
     <localInspection shortName="SpellCheckingInspection" bundle="messages.SpellCheckerBundle"
                      key="spellchecking.inspection.name" groupKey="proofread" enabledByDefault="true" level="TYPO"
                      language=""
-                     implementationClass="com.intellij.spellchecker.inspections.SpellCheckingInspection" dumbAware="true"/>
+                     implementationClass="com.intellij.spellchecker.inspections.SpellCheckingInspection"/>
 
     <nameSuggestionProvider id="DictionarySuggestionProvider" implementation="com.intellij.spellchecker.quickfixes.DictionarySuggestionProvider" order="first"/>
     <severitiesProvider implementation="com.intellij.spellchecker.SpellCheckerSeveritiesProvider"/>