diff --git a/docs/StyleGuide.rst b/docs/StyleGuide.rst
index 06e419080..79fa71677 100644
--- a/docs/StyleGuide.rst
+++ b/docs/StyleGuide.rst
@@ -67,7 +67,7 @@ C Code formatting
   The top-level directory contains the file .clang-format that contains
   instructions for a program to enforce some C code formatting with the `clangformat
   <https://clang.llvm.org/docs/ClangFormat.html>`_ package. You can code up your
-  changes and then run this command afterwards to fix many (but not al) formatting
+  changes and then run this command afterwards to fix many (but not all) formatting
   problems.
 
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