diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c
index 06c8251cc2..61a8d4d8d5 100644
--- a/ext/bigdecimal/bigdecimal.c
+++ b/ext/bigdecimal/bigdecimal.c
@@ -3607,9 +3607,9 @@ BigDecimal_limit(int argc, VALUE *argv, VALUE self)
 /* Returns the sign of the value.
  *
  * Returns a positive value if > 0, a negative value if < 0.
- * It behaves the same with zeros - 
+ * It behaves the same with zeros -
  * it returns a positive value for a positive zero (BigDecimal('0')) and
- * a negative value for a negative zero (BigDecimal('-0')). 
+ * a negative value for a negative zero (BigDecimal('-0')).
  *
  * The specific value returned indicates the type and sign of the BigDecimal,
  * as follows: