diff --git a/libavfilter/vf_psnr.c b/libavfilter/vf_psnr.c
index 2b980c17b2..f96179db44 100644
--- a/libavfilter/vf_psnr.c
+++ b/libavfilter/vf_psnr.c
@@ -22,7 +22,7 @@
 
 /**
  * @file
- * Caculate the PSNR between two input videos.
+ * Calculate the PSNR between two input videos.
  */
 
 #include "libavutil/avstring.h"
diff --git a/libavfilter/vf_ssim.c b/libavfilter/vf_ssim.c
index af1d161e21..c6989d618b 100644
--- a/libavfilter/vf_ssim.c
+++ b/libavfilter/vf_ssim.c
@@ -31,7 +31,7 @@
 
 /*
  * @file
- * Caculate the SSIM between two input videos.
+ * Calculate the SSIM between two input videos.
  */
 
 #include "libavutil/avstring.h"