diff --git a/src/main/kotlin/org/arend/intention/ExtractExpressionToFunctionIntention.kt b/src/main/kotlin/org/arend/intention/ExtractExpressionToFunctionIntention.kt
index 92d13d0f5..b15019301 100644
--- a/src/main/kotlin/org/arend/intention/ExtractExpressionToFunctionIntention.kt
+++ b/src/main/kotlin/org/arend/intention/ExtractExpressionToFunctionIntention.kt
@@ -1,5 +1,6 @@
 package org.arend.intention
 
+import com.intellij.codeInsight.intention.preview.IntentionPreviewInfo
 import com.intellij.openapi.editor.Editor
 import com.intellij.openapi.project.Project
 import com.intellij.psi.PsiFile
@@ -50,4 +51,6 @@ open class ExtractExpressionToFunctionIntention : AbstractGenerateFunctionIntent
     }
 
     override fun extractSelectionData(file: PsiFile, editor: Editor, project: Project): SelectionResult? = doExtractSelectionData(file, editor, project)
+
+    override fun generatePreview(project: Project, editor: Editor, file: PsiFile): IntentionPreviewInfo = IntentionPreviewInfo.EMPTY
 }
\ No newline at end of file
diff --git a/src/main/kotlin/org/arend/intention/GenerateFunctionFromGoalIntention.kt b/src/main/kotlin/org/arend/intention/GenerateFunctionFromGoalIntention.kt
index 6c6e3d030..cd6cf1426 100644
--- a/src/main/kotlin/org/arend/intention/GenerateFunctionFromGoalIntention.kt
+++ b/src/main/kotlin/org/arend/intention/GenerateFunctionFromGoalIntention.kt
@@ -1,5 +1,6 @@
 package org.arend.intention
 
+import com.intellij.codeInsight.intention.preview.IntentionPreviewInfo
 import com.intellij.openapi.components.service
 import com.intellij.openapi.editor.Editor
 import com.intellij.openapi.project.Project
@@ -44,12 +45,14 @@ class GenerateFunctionFromGoalIntention : AbstractGenerateFunctionIntention() {
         return file.findElementAt(editor.caretModel.offset)?.parentOfType<ArendGoal>(false) != null
     }
 
+    override fun generatePreview(project: Project, editor: Editor, file: PsiFile): IntentionPreviewInfo = IntentionPreviewInfo.EMPTY
+
     override fun extractSelectionData(file: PsiFile, editor: Editor, project: Project): SelectionResult? {
         val goal = file.findElementAt(editor.caretModel.offset)?.parentOfType<ArendGoal>(false) ?: return null
         val errorService = project.service<ErrorService>()
         val arendError = errorService.errors[goal.containingFile]?.firstOrNull { it.cause == goal }?.error as? GoalError
                 ?: return null
-        val goalType = (arendError as? GoalError)?.expectedType
+        val goalType = arendError.expectedType
         val (modifiedType, customArguments) = getCustomArguments(goal, goalType) { tryCorrespondedSubExpr(it, file, project, editor)?.subCore }
         val goalExpr = goal.expr?.let {
             tryCorrespondedSubExpr(it.textRange, file, project, editor)
diff --git a/src/main/kotlin/org/arend/intention/ReplaceMetaWithResultIntention.kt b/src/main/kotlin/org/arend/intention/ReplaceMetaWithResultIntention.kt
index 20ba5b0fb..63e4197cc 100644
--- a/src/main/kotlin/org/arend/intention/ReplaceMetaWithResultIntention.kt
+++ b/src/main/kotlin/org/arend/intention/ReplaceMetaWithResultIntention.kt
@@ -1,5 +1,6 @@
 package org.arend.intention
 
+import com.intellij.codeInsight.intention.preview.IntentionPreviewInfo
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.application.runReadAction
 import com.intellij.openapi.command.WriteCommandAction
@@ -7,6 +8,7 @@ import com.intellij.openapi.editor.Editor
 import com.intellij.openapi.project.Project
 import com.intellij.psi.PsiDocumentManager
 import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiFile
 import org.arend.core.expr.ErrorWithConcreteExpression
 import org.arend.extImpl.definitionRenamer.CachingDefinitionRenamer
 import org.arend.psi.ArendFile
@@ -45,4 +47,6 @@ class ReplaceMetaWithResultIntention : BaseArendIntention(ArendBundle.message("a
             replaceExprSmart(editor.document, expr, subConcrete, rangeOfConcrete(subConcrete), null, cExpr, text)
         }
     }
+
+    override fun generatePreview(project: Project, editor: Editor, file: PsiFile): IntentionPreviewInfo = IntentionPreviewInfo.EMPTY
 }
\ No newline at end of file
diff --git a/src/main/kotlin/org/arend/intention/ReplaceWithNormalFormIntention.kt b/src/main/kotlin/org/arend/intention/ReplaceWithNormalFormIntention.kt
index 6d43ec140..a1b92b244 100644
--- a/src/main/kotlin/org/arend/intention/ReplaceWithNormalFormIntention.kt
+++ b/src/main/kotlin/org/arend/intention/ReplaceWithNormalFormIntention.kt
@@ -1,9 +1,11 @@
 package org.arend.intention
 
+import com.intellij.codeInsight.intention.preview.IntentionPreviewInfo
 import com.intellij.openapi.command.WriteCommandAction
 import com.intellij.openapi.editor.Editor
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.util.TextRange
+import com.intellij.psi.PsiFile
 import org.arend.ext.core.ops.NormalizationMode
 import org.arend.extImpl.definitionRenamer.CachingDefinitionRenamer
 import org.arend.psi.ext.ArendExpr
@@ -30,4 +32,6 @@ class ReplaceWithNormalFormIntention : SelectionIntention<ArendExpr>(ArendExpr::
             }
         }
     }
+
+    override fun generatePreview(project: Project, editor: Editor, file: PsiFile): IntentionPreviewInfo = IntentionPreviewInfo.EMPTY
 }
\ No newline at end of file
diff --git a/src/main/kotlin/org/arend/intention/SplitAtomPatternIntention.kt b/src/main/kotlin/org/arend/intention/SplitAtomPatternIntention.kt
index b25d3ddaf..1baa95a29 100644
--- a/src/main/kotlin/org/arend/intention/SplitAtomPatternIntention.kt
+++ b/src/main/kotlin/org/arend/intention/SplitAtomPatternIntention.kt
@@ -1,8 +1,10 @@
 package org.arend.intention
 
+import com.intellij.codeInsight.intention.preview.IntentionPreviewInfo
 import com.intellij.openapi.editor.Editor
 import com.intellij.openapi.project.Project
 import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiFile
 import com.intellij.psi.util.startOffset
 import com.intellij.util.containers.tail
 import org.arend.ext.variable.Variable
@@ -84,6 +86,8 @@ class SplitAtomPatternIntention : SelfTargetingIntention<PsiElement>(PsiElement:
         return this.splitPatternEntries != null
     }
 
+    override fun generatePreview(project: Project, editor: Editor, file: PsiFile): IntentionPreviewInfo = IntentionPreviewInfo.EMPTY
+
     override fun applyTo(element: PsiElement, project: Project, editor: Editor) {
         splitPatternEntries?.let { doSplitPattern(element, project, it) }
     }
diff --git a/src/main/kotlin/org/arend/intention/WrapInGoalIntention.kt b/src/main/kotlin/org/arend/intention/WrapInGoalIntention.kt
index 3ef827544..c45b7516b 100644
--- a/src/main/kotlin/org/arend/intention/WrapInGoalIntention.kt
+++ b/src/main/kotlin/org/arend/intention/WrapInGoalIntention.kt
@@ -1,8 +1,10 @@
 package org.arend.intention
 
+import com.intellij.codeInsight.intention.preview.IntentionPreviewInfo
 import com.intellij.openapi.editor.Editor
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.util.TextRange
+import com.intellij.psi.PsiFile
 import org.arend.psi.ext.ArendExpr
 import org.arend.psi.ArendFile
 import org.arend.psi.ext.ArendLiteral
diff --git a/src/main/kotlin/org/arend/intention/generating/CreateLetBindingIntention.kt b/src/main/kotlin/org/arend/intention/generating/CreateLetBindingIntention.kt
index 3c29172f0..1189fb6b0 100644
--- a/src/main/kotlin/org/arend/intention/generating/CreateLetBindingIntention.kt
+++ b/src/main/kotlin/org/arend/intention/generating/CreateLetBindingIntention.kt
@@ -3,6 +3,7 @@
 package org.arend.intention.generating
 
 import com.intellij.codeInsight.daemon.DaemonCodeAnalyzer
+import com.intellij.codeInsight.intention.preview.IntentionPreviewInfo
 import com.intellij.openapi.application.runWriteAction
 import com.intellij.openapi.command.CommandProcessor
 import com.intellij.openapi.command.executeCommand
@@ -67,6 +68,8 @@ class CreateLetBindingIntention : AbstractGenerateFunctionIntention() {
         return collectWrappableOptions(subPsi, rangeOfConcrete(subConcrete)).isNotEmpty()
     }
 
+    override fun generatePreview(project: Project, editor: Editor, file: PsiFile): IntentionPreviewInfo = IntentionPreviewInfo.EMPTY
+
     override fun getText(): String = ArendBundle.message("arend.create.let.binding")
 
     private data class WrappableOption(