diff --git a/libavcodec/arm/fft_fixed_init_arm.c b/libavcodec/arm/fft_fixed_init_arm.c
index 94081d72ee..7cf8a6ef36 100644
--- a/libavcodec/arm/fft_fixed_init_arm.c
+++ b/libavcodec/arm/fft_fixed_init_arm.c
@@ -3,7 +3,7 @@
  *
  * This file is part of FFmpeg.
  *
- * FFMpeg is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
diff --git a/libavcodec/fft-fixed-test.c b/libavcodec/fft-fixed-test.c
index fa750b6326..a1a61604a9 100644
--- a/libavcodec/fft-fixed-test.c
+++ b/libavcodec/fft-fixed-test.c
@@ -1,12 +1,12 @@
 /*
  * This file is part of FFmpeg.
  *
- * FFMpeg is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * FFMpeg is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
diff --git a/libavfilter/formats.h b/libavfilter/formats.h
index f884294cf0..c5a4e3db2b 100644
--- a/libavfilter/formats.h
+++ b/libavfilter/formats.h
@@ -1,5 +1,5 @@
 /*
- * This file is part of FFMpeg.
+ * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public