diff --git a/core/smn_lang.cpp b/core/smn_lang.cpp
index c6da6f2a..d4d6101d 100644
--- a/core/smn_lang.cpp
+++ b/core/smn_lang.cpp
@@ -14,6 +14,8 @@
 
 #include "PluginSys.h"
 #include "Translator.h"
+#include "LibrarySys.h"
+#include "sm_stringutil.h"
 
 static cell_t sm_LoadTranslations(IPluginContext *pCtx, const cell_t *params)
 {
@@ -23,6 +25,16 @@ static cell_t sm_LoadTranslations(IPluginContext *pCtx, const cell_t *params)
 
 	pCtx->LocalToString(params[1], &filename);
 
+	/* Check if there is no extension */
+	const char *ext = g_LibSys.GetFileExtension(filename);
+	if (!ext || (strcmp(ext, "cfg") && strcmp(ext, "txt")))
+	{
+		/* Append one */
+		static char new_file[PLATFORM_MAX_PATH];
+		UTIL_Format(new_file, sizeof(new_file), "%s.txt", filename);
+		filename = new_file;
+	}
+
 	index = g_Translator.FindOrAddPhraseFile(filename);
 	pl->AddLangFile(index);
 
diff --git a/plugins/include/lang.inc b/plugins/include/lang.inc
index 1b45612e..f1d5b5df 100644
--- a/plugins/include/lang.inc
+++ b/plugins/include/lang.inc
@@ -22,6 +22,7 @@
 
 /**
  * Loads a translation file for the plugin calling this native.
+ * If no extension is specified, .txt is assumed.
  *
  * @param path		Translation file.
  * @noreturn