diff --git a/src/lib/file.cpp b/src/lib/file.cpp
index bfdd245..15a0b45 100644
--- a/src/lib/file.cpp
+++ b/src/lib/file.cpp
@@ -225,7 +225,7 @@ ErrorOrVoid File::insertString(tiny_utf8::string string){
 
         this->fileStream.read(reinterpret_cast<char*>(buffer), this->size.value);
         
-        readData = tiny_utf8::string((char *) buffer);
+        readData = tiny_utf8::string((char *) buffer, 0, this->size.value);
         readData.insert(readData.begin()+this->cursorPosition, string);
 
         this->fileStream.seekg(0);