diff --git a/README.md b/README.md
index 06bf4c18..006fbaa3 100644
--- a/README.md
+++ b/README.md
@@ -264,7 +264,7 @@ process.
     repository (Vundle will do this for you) to fetch YCM's dependencies.
 
 3.  [Complete this step ONLY if you care about semantic completion support for
-    C-family languages. Otherwise it's not neccessary.]
+    C-family languages. Otherwise it's not necessary.]
 
     **Download the latest version of `libclang`**. Clang is an open-source
     compiler that can compile C/C++/Objective-C/Objective-C++. The `libclang`
@@ -311,7 +311,7 @@ process.
         cmake -G "Unix Makefiles" . ~/.vim/bundle/YouCompleteMe/third_party/ycmd/cpp
 
     For those who want to use the system version of boost, you would pass
-    `-DUSE_SYSTEM_BOOST=ON` to cmake. This may be neccassery on some systems
+    `-DUSE_SYSTEM_BOOST=ON` to cmake. This may be necessary on some systems
     where the bundled version of boost doesn't compile out of the box.
 
     NOTE: We **STRONGLY recommended AGAINST use** of the system boost instead
@@ -1432,7 +1432,7 @@ Default: `[see next line]`
     let g:ycm_semantic_triggers =  {
       \   'c' : ['->', '.'],
       \   'objc' : ['->', '.'],
-      \   'ocaml' : ['.', '#'],
+      \   'OCaml' : ['.', '#'],
       \   'cpp,objcpp' : ['->', '.', '::'],
       \   'perl' : ['->'],
       \   'php' : ['->', '::'],
@@ -1722,7 +1722,7 @@ YCM needs to perform subsequence-based filtering on _all_ of those identifiers
 I'm sorry, but that level of performance is just plain impossible to achieve
 with VimScript. I've tried, and the language is just too slow. No, you can't get
 acceptable performance even if you limit yourself to just the identifiers in the
-current file and simple prefix-based fitering.
+current file and simple prefix-based filtering.
 
 ### Why does YCM demand such a recent version of Vim?