Fix typo in lexer.nim (#15876)

1 files changed, 1 insertions, 1 deletions

diff --git a/compiler/lexer.nim b/compiler/lexer.nim
index e020236b1..b55dd3585 100644
--- a/compiler/lexer.nim
+++ b/compiler/lexer.nim
@@ -10,7 +10,7 @@
 # This scanner is handwritten for efficiency. I used an elegant buffering
 # scheme which I have not seen anywhere else:
 # We guarantee that a whole line is in the buffer. Thus only when scanning
-# the \n or \r character we have to check wether we need to read in the next
+# the \n or \r character we have to check whether we need to read in the next
 # chunk. (\n or \r already need special handling for incrementing the line
 # counter; choosing both \n and \r allows the scanner to properly read Unix,
 # DOS or Macintosh text files, even when it is not the native format.