diff --git a/src/fontset.c b/src/fontset.c
index 79967ed36d0..ef8c2574b47 100644
--- a/src/fontset.c
+++ b/src/fontset.c
@@ -1233,7 +1233,7 @@ The value is a list:\n\
   \(FONTSET-NAME (CHARSET-OR-RANGE FONT-SPEC OPENED ...) ...),\n\
 where,\n\
   FONTSET-NAME is a full name of the fontset.\n\
-  CHARSET-OR-RANGE is a charset, a character (may be a generic character)\n\ 
+  CHARSET-OR-RANGE is a charset, a character (may be a generic character)\n\
     or a cons of two characters specifying the range of characters.\n\
   FONT-SPEC is a fontname pattern string or a cons (FAMILY . REGISTRY),\n\
     where FAMILY is a `FAMILY' field of a XLFD font name,\n\