diff --git a/src/xrt/include/xrt/xrt_defines.h b/src/xrt/include/xrt/xrt_defines.h
index fbf29d7f2..f32a1c2b7 100644
--- a/src/xrt/include/xrt/xrt_defines.h
+++ b/src/xrt/include/xrt/xrt_defines.h
@@ -855,7 +855,7 @@ enum xrt_input_type
 /*!
  * @brief Extract the xrt_input_type from an xrt_input_name.
  *
- * @param name A xrt_input_name value
+ * @param name An xrt_input_name value
  *
  * @relates xrt_input_name
  * @returns @ref xrt_input_type
@@ -866,7 +866,7 @@ enum xrt_input_type
 /*!
  * @brief Extract the xrt_input_name id from an xrt_input_name.
  *
- * @param name A xrt_input_name value
+ * @param name An xrt_input_name value
  *
  * @relates xrt_input_name
  * @returns @ref xrt_input_type
diff --git a/src/xrt/include/xrt/xrt_gfx_egl.h b/src/xrt/include/xrt/xrt_gfx_egl.h
index fc85c8d74..0c20c89f3 100644
--- a/src/xrt/include/xrt/xrt_gfx_egl.h
+++ b/src/xrt/include/xrt/xrt_gfx_egl.h
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: BSL-1.0
 /*!
  * @file
- * @brief  Header defining a XRT graphics provider.
+ * @brief  Header defining an XRT graphics provider.
  * @author Drew DeVault <sir@cmpwn.com>
  * @ingroup xrt_iface
  */
diff --git a/src/xrt/include/xrt/xrt_gfx_vk.h b/src/xrt/include/xrt/xrt_gfx_vk.h
index 833c3cdcf..5f13263b2 100644
--- a/src/xrt/include/xrt/xrt_gfx_vk.h
+++ b/src/xrt/include/xrt/xrt_gfx_vk.h
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: BSL-1.0
 /*!
  * @file
- * @brief  Header defining a XRT graphics provider.
+ * @brief  Header defining an XRT graphics provider.
  * @author Jakob Bornecrantz <jakob@collabora.com>
  * @ingroup xrt_iface
  */
diff --git a/src/xrt/include/xrt/xrt_gfx_win32.h b/src/xrt/include/xrt/xrt_gfx_win32.h
index f3c6f1a83..03a44b781 100644
--- a/src/xrt/include/xrt/xrt_gfx_win32.h
+++ b/src/xrt/include/xrt/xrt_gfx_win32.h
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: BSL-1.0
 /*!
  * @file
- * @brief  Header defining a XRT graphics provider.
+ * @brief  Header defining an XRT graphics provider.
  * @author Rylie Pavlik <rylie.pavlik@collabora.com>
  * @author Jakob Bornecrantz <jakob@collabora.com>
  * @ingroup xrt_iface
diff --git a/src/xrt/include/xrt/xrt_gfx_xlib.h b/src/xrt/include/xrt/xrt_gfx_xlib.h
index a840896f2..c6a60997c 100644
--- a/src/xrt/include/xrt/xrt_gfx_xlib.h
+++ b/src/xrt/include/xrt/xrt_gfx_xlib.h
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: BSL-1.0
 /*!
  * @file
- * @brief  Header defining a XRT graphics provider.
+ * @brief  Header defining an XRT graphics provider.
  * @author Jakob Bornecrantz <jakob@collabora.com>
  * @ingroup xrt_iface
  */