diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2833aa39..c29dd168 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -51,7 +51,7 @@ endif ()
 
 if (MASTER_PROJECT AND CMAKE_GENERATOR MATCHES "Visual Studio")
   # If Microsoft SDK is installed create script run-msbuild.bat that
-  # calls SetEnv.cmd to to set up build environment and runs msbuild.
+  # calls SetEnv.cmd to set up build environment and runs msbuild.
   # It is useful when building Visual Studio projects with the SDK
   # toolchain rather than Visual Studio.
   include(FindSetEnv)
diff --git a/ChangeLog.rst b/ChangeLog.rst
index e3847835..19288d9a 100644
--- a/ChangeLog.rst
+++ b/ChangeLog.rst
@@ -435,7 +435,7 @@ Fixes
   `@MariadeAnton <https://github.com/MariadeAnton>`_ and
   `@franramirez688 <https://github.com/franramirez688>`_.
 
-* Improved support for bulding with `Android NDK
+* Improved support for building with `Android NDK
   <https://developer.android.com/tools/sdk/ndk/index.html>`_
   (`#107 <https://github.com/fmtlib/fmt/pull/107>`_).
   Thanks to `@newnon <https://github.com/newnon>`_.
@@ -621,7 +621,7 @@ Fixes
 
   Apart from a more natural syntax, this also improves performance as there
   is no need to construct temporary formatter objects and control arguments'
-  lifetimes. Because the wrapper functions are very ligthweight, this doesn't
+  lifetimes. Because the wrapper functions are very lightweight, this doesn't
   cause code bloat even in pre-C++11 mode.
 
 * Simplified common case of formatting an ``std::string``. Now it requires a
diff --git a/doc/usage.rst b/doc/usage.rst
index 2d22f001..27d96ede 100644
--- a/doc/usage.rst
+++ b/doc/usage.rst
@@ -69,7 +69,7 @@ the previous section. Then compile the ``doc`` target/project, for example::
 
   make doc
 
-This will generate the HTML documenation in ``doc/html``.
+This will generate the HTML documentation in ``doc/html``.
   
 Android NDK
 ===========
diff --git a/fmt/posix.h b/fmt/posix.h
index bfbd3851..303d460d 100644
--- a/fmt/posix.h
+++ b/fmt/posix.h
@@ -145,7 +145,7 @@ public:
   // A "move constructor" for moving from a temporary.
   BufferedFile(Proxy p) FMT_NOEXCEPT : file_(p.file) {}
 
-  // A "move constructor" for for moving from an lvalue.
+  // A "move constructor" for moving from an lvalue.
   BufferedFile(BufferedFile &f) FMT_NOEXCEPT : file_(f.file_) {
     f.file_ = 0;
   }
@@ -251,7 +251,7 @@ class File {
   // A "move constructor" for moving from a temporary.
   File(Proxy p) FMT_NOEXCEPT : fd_(p.fd) {}
 
-  // A "move constructor" for for moving from an lvalue.
+  // A "move constructor" for moving from an lvalue.
   File(File &other) FMT_NOEXCEPT : fd_(other.fd_) {
     other.fd_ = -1;
   }