diff --git a/compiler/fir/fir-deserialization/src/org/jetbrains/kotlin/fir/deserialization/AbstractFirDeserializedSymbolsProvider.kt b/compiler/fir/fir-deserialization/src/org/jetbrains/kotlin/fir/deserialization/AbstractFirDeserializedSymbolsProvider.kt
index 58154e61519..f303ef8729f 100644
--- a/compiler/fir/fir-deserialization/src/org/jetbrains/kotlin/fir/deserialization/AbstractFirDeserializedSymbolsProvider.kt
+++ b/compiler/fir/fir-deserialization/src/org/jetbrains/kotlin/fir/deserialization/AbstractFirDeserializedSymbolsProvider.kt
@@ -46,7 +46,9 @@ abstract class LibraryPathFilter {
         }
     }
 
-    class LibraryList(val libs: Set<Path>) : LibraryPathFilter() {
+    class LibraryList(libs: Set<Path>) : LibraryPathFilter() {
+        val libs: Set<Path> = libs.mapTo(mutableSetOf()) { it.normalize() }
+
         override fun accepts(path: Path?): Boolean {
             if (path == null) return false
             return libs.any { path.startsWith(it) }
diff --git a/compiler/fir/java/src/org/jetbrains/kotlin/fir/java/deserialization/KotlinDeserializedJvmSymbolsProvider.kt b/compiler/fir/java/src/org/jetbrains/kotlin/fir/java/deserialization/KotlinDeserializedJvmSymbolsProvider.kt
index 839ee532aab..5c618f8fb3d 100644
--- a/compiler/fir/java/src/org/jetbrains/kotlin/fir/java/deserialization/KotlinDeserializedJvmSymbolsProvider.kt
+++ b/compiler/fir/java/src/org/jetbrains/kotlin/fir/java/deserialization/KotlinDeserializedJvmSymbolsProvider.kt
@@ -169,6 +169,6 @@ class KotlinDeserializedJvmSymbolsProvider(
     }
 
     private fun String?.toPath(): Path? {
-        return this?.let { Paths.get(it) }
+        return this?.let { Paths.get(it).normalize() }
     }
 }