diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index 7c29af42b4..d1803591ee 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -38,7 +38,7 @@
 */
 
 /*
-tested special converters (most are tested actually but i didnt write it down ...)
+tested special converters (most are tested actually, but i did not write it down ...)
  YV12 -> BGR16
  YV12 -> YV12
  BGR15 -> BGR16