diff --git a/src/style/CharacterStyle.js b/src/style/CharacterStyle.js
index 7f9393d3..51c59ee6 100644
--- a/src/style/CharacterStyle.js
+++ b/src/style/CharacterStyle.js
@@ -43,7 +43,12 @@ var CharacterStyle = this.CharacterStyle = PathStyle.extend(/** @lends Character
 		fontSize: 12,
 		leading: null,
 		font: 'sans-serif'
-	})
+	}),
+	_flags: {
+		fontSize: Change.GEOMETRY,
+		leading: Change.GEOMETRY,
+		font: Change.GEOMETRY
+	}
 
 	/**
 	 * CharacterStyle objects don't need to be created directly. Just pass an
diff --git a/src/style/ParagraphStyle.js b/src/style/ParagraphStyle.js
index 551fcd86..f32f1020 100644
--- a/src/style/ParagraphStyle.js
+++ b/src/style/ParagraphStyle.js
@@ -35,6 +35,9 @@ var ParagraphStyle = this.ParagraphStyle = Style.extend(/** @lends ParagraphStyl
 	_style: 'paragraphStyle',
 	_defaults: {
 		justification: 'left'
+	},
+	_flags: {
+		justification: Change.GEOMETRY
 	}
 
 	/**