diff --git a/Common/src/main/java/com/tabnineCommon/chat/commandHandlers/context/GetBasicContextHandler.kt b/Common/src/main/java/com/tabnineCommon/chat/commandHandlers/context/GetBasicContextHandler.kt
index 3885590b..d6b09720 100644
--- a/Common/src/main/java/com/tabnineCommon/chat/commandHandlers/context/GetBasicContextHandler.kt
+++ b/Common/src/main/java/com/tabnineCommon/chat/commandHandlers/context/GetBasicContextHandler.kt
@@ -12,6 +12,7 @@ import com.tabnineCommon.binary.requests.fileMetadata.FileMetadataRequest
 import com.tabnineCommon.chat.commandHandlers.ChatMessageHandler
 import com.tabnineCommon.general.DependencyContainer
 import java.io.File
+import java.util.*
 
 data class BasicContext(
     private val fileUri: String? = null,
@@ -79,7 +80,7 @@ public fun getPredominantWorkspaceLanguage(
             }
 
             if (!virtualFile.isDirectory && virtualFile.isValid && includeFilePredicate(virtualFile.path)) {
-                val fileExtension = virtualFile.extension?.toLowerCase() // Get the file extension
+                val fileExtension = virtualFile.extension?.lowercase(Locale.ENGLISH) // Get the file extension
 
                 if (fileExtension != null && getLanguageFromExtension(fileExtension) != null) {
                     extensionCount[fileExtension] = extensionCount.getOrDefault(fileExtension, 0) + 1