diff --git a/plugins/org.eclipse.actf.visualization.gui/src/messages.properties b/plugins/org.eclipse.actf.visualization.gui/src/messages.properties
index fe8dea7..6a741d0 100644
--- a/plugins/org.eclipse.actf.visualization.gui/src/messages.properties
+++ b/plugins/org.eclipse.actf.visualization.gui/src/messages.properties
@@ -126,4 +126,4 @@
 #ia2
 ia2.shape=Shape
 ia2.style_shape={0} shape
-ia2.heading_level=Heading level {0}
+ia2.heading_level=Heading level {0}
\ No newline at end of file
diff --git a/plugins/org.eclipse.actf.visualization.gui/src/messages_ja.properties b/plugins/org.eclipse.actf.visualization.gui/src/messages_ja.properties
index f914a49..5944174 100644
--- a/plugins/org.eclipse.actf.visualization.gui/src/messages_ja.properties
+++ b/plugins/org.eclipse.actf.visualization.gui/src/messages_ja.properties
@@ -126,4 +126,4 @@
 #ia2
 ia2.shape=Shape
 ia2.style_shape={0} shape
-ia2.heading_level=Heading level {0}
+ia2.heading_level=Heading level {0}
\ No newline at end of file
diff --git a/plugins/org.eclipse.actf.visualization.gui/src/org/eclipse/actf/visualization/gui/msaa/checker/MSAAProblemChecker.java b/plugins/org.eclipse.actf.visualization.gui/src/org/eclipse/actf/visualization/gui/msaa/checker/MSAAProblemChecker.java
index ae353a1..651f9bb 100644
--- a/plugins/org.eclipse.actf.visualization.gui/src/org/eclipse/actf/visualization/gui/msaa/checker/MSAAProblemChecker.java
+++ b/plugins/org.eclipse.actf.visualization.gui/src/org/eclipse/actf/visualization/gui/msaa/checker/MSAAProblemChecker.java
@@ -7,6 +7,7 @@
  *
  * Contributors:
  *    Takashi ITOH - initial API and implementation
+ *    Kentarou FUKUDA - initial API and implementation
  *******************************************************************************/
 package org.eclipse.actf.visualization.gui.msaa.checker;