diff --git a/java/kotlin-extractor/src/main/kotlin/KotlinUsesExtractor.kt b/java/kotlin-extractor/src/main/kotlin/KotlinUsesExtractor.kt
index 22e6ed0a5df..5e1642872eb 100644
--- a/java/kotlin-extractor/src/main/kotlin/KotlinUsesExtractor.kt
+++ b/java/kotlin-extractor/src/main/kotlin/KotlinUsesExtractor.kt
@@ -1005,9 +1005,10 @@ open class KotlinUsesExtractor(
                 val binaryPath =
                     getContainerSourceBinaryPath(d.containerSource)
                         ?.let { normalizeExternalFileClassBinaryPath(it, fqName) }
-                        ?: "/!unknown-binary-location/${fqName.asString().replace(".", "/")}.class"
-                val fileId = tw.mkFileId(binaryPath, true)
-                tw.writeHasLocation(fileClassId, tw.getWholeFileLocation(fileId))
+                if (binaryPath != null && shouldUseConcreteExternalFileClassLocation(binaryPath)) {
+                    val fileId = tw.mkFileId(binaryPath, true)
+                    tw.writeHasLocation(fileClassId, tw.getWholeFileLocation(fileId))
+                }
             }
             return fileClassId
         }
diff --git a/java/kotlin-extractor/src/main/kotlin/utils/ClassNames.kt b/java/kotlin-extractor/src/main/kotlin/utils/ClassNames.kt
index 4027d57e534..7038a2060bb 100644
--- a/java/kotlin-extractor/src/main/kotlin/utils/ClassNames.kt
+++ b/java/kotlin-extractor/src/main/kotlin/utils/ClassNames.kt
@@ -228,6 +228,12 @@ fun normalizeExternalFileClassBinaryPath(path: String, fqName: FqName): String {
     return path
 }
 
+fun shouldUseConcreteExternalFileClassLocation(path: String): Boolean {
+    val normalizedPath = path.replace('\\', '/')
+    return normalizedPath.contains("/") &&
+        !normalizedPath.startsWith("/!unknown-binary-location/")
+}
+
 fun getJavaEquivalentClassId(c: IrClass) =
     c.fqNameWhenAvailable?.toUnsafe()?.let { JavaToKotlinClassMap.mapKotlinToJava(it) }