diff --git a/doc/kernel/microkernel/microkernel_semaphores.rst b/doc/kernel/microkernel/microkernel_semaphores.rst
index f09154b5c7b..4592e11ca2c 100644
--- a/doc/kernel/microkernel/microkernel_semaphores.rst
+++ b/doc/kernel/microkernel/microkernel_semaphores.rst
@@ -106,7 +106,7 @@ includes the file :file:`zephyr.h`.
 Private Semaphore
 -----------------
 
-Define the semaphore a source file using the following syntax:
+Define the semaphore in a source file using the following syntax:
 
 .. code-block:: c