diff --git a/docs/SourceLevelDebugging.html b/docs/SourceLevelDebugging.html
index 49ce278..69cb1af 100644
--- a/docs/SourceLevelDebugging.html
+++ b/docs/SourceLevelDebugging.html
@@ -288,7 +288,7 @@
    way.  Also, all debugging information objects start with a tag to indicate
    what type of object it is.  The source-language is allowed to define its own
    objects, by using unreserved tag numbers.  We recommend using with tags in
-   the range 0x1000 thru 0x2000 (there is a defined enum DW_TAG_user_base =
+   the range 0x1000 through 0x2000 (there is a defined enum DW_TAG_user_base =
    0x1000.)</p>
 
 <p>The fields of debug descriptors used internally by LLVM