diff --git a/04.internals.md b/04.internals.md
index f6415f7d9..49540d9af 100644
--- a/04.internals.md
+++ b/04.internals.md
@@ -5,7 +5,7 @@ permalink: /internals/
 ---
 
 * toc
-{TOC}
+{:toc}
 
 # High-Level Design
 ![High-Level Design]({{ site.baseurl }}/img/engines_high_level_design.jpg)
@@ -416,7 +416,7 @@ Otherwise, object's property set is iterated fully and corresponding record is r
 
 ECMA-defined runtime operations are implemented mostly with routine having the following signature:
 
-`ecma_completion_value_t ecma_op_* ([ecma_value_t argumants])`  
+`ecma_completion_value_t ecma_op_* ([ecma_value_t arguments])`  
 or  
 `ecma_property_t * ecma_op_[find/get]*_property (objs, name string, ...)`  
 
@@ -453,7 +453,7 @@ Rules for completion value are the same as rules for values, contained in them.
 ## Opcode handler structure
 
 Most opcode handlers consists of the following steps:
-1. Decode instruction (i.e. extract "idx"-s)
+1. Decode instruction (i.e. extract `idx`-s)
 2. Read input values from variables/registers
 3. Perform necessary type conversions
 4. Perform calls to runtime
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