diff --git a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirTopLevelTypeAliasChecker.kt b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirTopLevelTypeAliasChecker.kt
index 88277e4702f..2a01a91f327 100644
--- a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirTopLevelTypeAliasChecker.kt
+++ b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirTopLevelTypeAliasChecker.kt
@@ -11,7 +11,6 @@ import org.jetbrains.kotlin.fir.analysis.diagnostics.FirErrors
 import org.jetbrains.kotlin.diagnostics.reportOn
 import org.jetbrains.kotlin.fir.declarations.FirFile
 import org.jetbrains.kotlin.fir.declarations.FirTypeAlias
-import org.jetbrains.kotlin.fir.resolve.diagnostics.ConeUnsupportedDynamicType
 import org.jetbrains.kotlin.fir.resolve.fullyExpandedType
 import org.jetbrains.kotlin.fir.resolve.toSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.FirTypeAliasSymbol
diff --git a/compiler/fir/semantics/src/org/jetbrains/kotlin/fir/resolve/diagnostics/ConeDiagnostics.kt b/compiler/fir/semantics/src/org/jetbrains/kotlin/fir/resolve/diagnostics/ConeDiagnostics.kt
index e0af7f08b50..3e42957fe92 100644
--- a/compiler/fir/semantics/src/org/jetbrains/kotlin/fir/resolve/diagnostics/ConeDiagnostics.kt
+++ b/compiler/fir/semantics/src/org/jetbrains/kotlin/fir/resolve/diagnostics/ConeDiagnostics.kt
@@ -212,8 +212,6 @@ class ConeUnresolvedParentInImport(val parentClassId: ClassId) : ConeDiagnostic
         get() = "unresolved import"
 }
 
-class ConeUnsupportedDynamicType : ConeUnsupported("Dynamic types are not supported in this context")
-
 class ConeDeprecated(
     val source: KtSourceElement?,
     override val symbol: FirBasedSymbol<*>,