diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index d7e81bf55c..6195fc52b8 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -747,7 +747,7 @@ typedef struct AVPanScan{
  * Audio Video Frame.
  * New fields can be added to the end of FF_COMMON_FRAME with minor version
  * bumps.
- * Removial, reordering and changes to existing fields require a Major
+ * Removal, reordering and changes to existing fields require a Major
  * version bump. No fields should be added into AVFrame before or after
  * FF_COMMON_FRAME!
  * sizeof(AVFrame) must not be used outside libav*
@@ -761,7 +761,7 @@ typedef struct AVFrame {
 /**
  * main external API structure.
  * New fields can be added to the end with minor version bumps.
- * Removial, reordering and changes to existing fields require a Major
+ * Removal, reordering and changes to existing fields require a Major
  * version bump.
  * sizeof(AVCodecContext) must not be used outside libav*
  */
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index eb168d1c31..b6c2c0a1cc 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -272,7 +272,7 @@ typedef struct AVIndexEntry {
 /**
  * Stream structure.
  * New fields can be added to the end with minor version bumps.
- * Removial, reordering and changes to existing fields require a Major
+ * Removal, reordering and changes to existing fields require a Major
  * version bump.
  * sizeof(AVStream) must not be used outside libav*
  */
@@ -353,7 +353,7 @@ typedef struct AVStream {
 /**
  *
  * New fields can be added to the end with minor version bumps.
- * Removial, reordering and changes to existing fields require a Major
+ * Removal, reordering and changes to existing fields require a Major
  * version bump.
  * sizeof(AVProgram) must not be used outside libav*
  */
@@ -375,7 +375,7 @@ typedef struct AVProgram {
 /**
  * format I/O context.
  * New fields can be added to the end with minor version bumps.
- * Removial, reordering and changes to existing fields require a Major
+ * Removal, reordering and changes to existing fields require a Major
  * version bump.
  * sizeof(AVFormatContext) must not be used outside libav*
  */
diff --git a/libavformat/avio.h b/libavformat/avio.h
index 0d90e3b945..a22d43432f 100644
--- a/libavformat/avio.h
+++ b/libavformat/avio.h
@@ -32,7 +32,7 @@ typedef int64_t offset_t;
 /**
  * URL Context.
  * New fields can be added to the end with minor version bumps.
- * Removial, reordering and changes to existing fields require a Major
+ * Removal, reordering and changes to existing fields require a Major
  * version bump.
  * sizeof(URLContext) must not be used outside libav*
  */
@@ -145,7 +145,7 @@ int register_protocol(URLProtocol *protocol);
 /**
  * Bytestream IO Context.
  * New fields can be added to the end with minor version bumps.
- * Removial, reordering and changes to existing fields require a Major
+ * Removal, reordering and changes to existing fields require a Major
  * version bump.
  * sizeof(ByteIOContext) must not be used outside libav*
  */