diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index d85f313..d59aa96 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -2134,7 +2134,7 @@
  * @regulator: regulator source
  *
  * Returns positive if the regulator driver backing the source/client
- * can change its voltage, false otherwise. Usefull for detecting fixed
+ * can change its voltage, false otherwise. Useful for detecting fixed
  * or dummy regulators and disabling voltage change logic in the client
  * driver.
  */