diff --git a/runtime/doc/insert.txt b/runtime/doc/insert.txt
index 0db0e41..ccf5178 100644
--- a/runtime/doc/insert.txt
+++ b/runtime/doc/insert.txt
@@ -877,7 +877,7 @@
 
     func Thesaur(findstart, base)
       if a:findstart
-    	return searchpos('\<', 'bnW', line('.'))[1] - 1
+	return searchpos('\<', 'bnW', line('.'))[1] - 1
       endif
       let res = []
       let h = ''
@@ -1118,8 +1118,8 @@
 larger than the cursor column, the cursor column is used.
 
 Negative return values:
-   -2 	To cancel silently and stay in completion mode.
-   -3 	To cancel silently and leave completion mode.
+   -2	To cancel silently and stay in completion mode.
+   -3	To cancel silently and leave completion mode.
    Another negative value: completion starts at the cursor column
 
 On the second invocation the arguments are:
@@ -1176,7 +1176,7 @@
 			item with the same word is already present.
 	empty		when non-zero this match will be added even when it is
 			an empty string
-	user_data 	custom data which is associated with the item and
+	user_data	custom data which is associated with the item and
 			available in |v:completed_item|; it can be any type;
 			defaults to an empty string