diff --git a/src/tex2lyx/dummy_impl.cpp b/src/tex2lyx/dummy_impl.cpp
index 62436af5e6..30eb847a92 100644
--- a/src/tex2lyx/dummy_impl.cpp
+++ b/src/tex2lyx/dummy_impl.cpp
@@ -10,7 +10,7 @@
 
 /**
  * This file contains dummy implementation of some methods that are
- * needed byclasses used by tex2lyx. This allows to reduce the number
+ * needed by classes used by tex2lyx. This allows to reduce the number
  * of classes we have to link against.
 */