diff --git a/bootstrap-web/src/main/java/org/ligoj/bootstrap/http/security/ExtendedWebSecurityExpressionRoot.java b/bootstrap-web/src/main/java/org/ligoj/bootstrap/http/security/ExtendedWebSecurityExpressionRoot.java
index fdeaeb93..0ca0085e 100644
--- a/bootstrap-web/src/main/java/org/ligoj/bootstrap/http/security/ExtendedWebSecurityExpressionRoot.java
+++ b/bootstrap-web/src/main/java/org/ligoj/bootstrap/http/security/ExtendedWebSecurityExpressionRoot.java
@@ -11,7 +11,7 @@
 import java.util.function.Supplier;
 
 /**
- * Extended expression to but used in method and authentication voter.
+ * Extended expression to be used in method and authentication voters.
  */
 public class ExtendedWebSecurityExpressionRoot extends WebSecurityExpressionRoot {
 
@@ -40,7 +40,7 @@ public ExtendedWebSecurityExpressionRoot(final Supplier<Authentication> authenti
 	}
 
 	/**
-	 * Validate the current request a defined parameter.
+     * Validate that the current request has a defined parameter.
 	 *
 	 * @param parameter
 	 *            the expected non-blank parameter.
@@ -51,7 +51,7 @@ public boolean hasParameter(final String parameter) {
 	}
 
 	/**
-	 * Validate the current request a defined header.
+     * Validate that the current request has a defined header.
 	 *
 	 * @param header
 	 *            the expected non-blank header.