diff --git a/doc/go_spec.html b/doc/go_spec.html
index 1caaba1ccb..37580a83b7 100644
--- a/doc/go_spec.html
+++ b/doc/go_spec.html
@@ -800,7 +800,7 @@ TypeName  = identifier | QualifiedIdent .
 TypeArgs  = "[" TypeList [ "," ] "]" .
 TypeList  = Type { "," Type } .
 TypeLit   = ArrayType | StructType | PointerType | FunctionType | InterfaceType |
-	    SliceType | MapType | ChannelType .
+            SliceType | MapType | ChannelType .
 </pre>
 
 <p>
@@ -3015,7 +3015,7 @@ declared in the <a href="#Blocks">package block</a> of that package.
 </p>
 
 <pre>
-math.Sin	// denotes the Sin function in package math
+math.Sin // denotes the Sin function in package math
 </pre>
 
 <h3 id="Composite_literals">Composite literals</h3>
@@ -4841,7 +4841,7 @@ due to two's-complement <a href="#Integer_overflow">integer overflow</a>:
 </p>
 
 <pre>
-			 x, q
+                         x, q
 int8                     -128
 int16                  -32768
 int32             -2147483648