diff --git a/CHANGELOG.md b/CHANGELOG.md
index 30ff40a624..06d88d08c4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@ ChangeLog (Release Notes)
 
 unreleased
 ----------
+* Fix: repostのborder-radiusが効いていない (#743)
 * ユーザビリティの向上
 
 2493-2 (2017/08/29)
diff --git a/src/web/app/desktop/tags/timeline.tag b/src/web/app/desktop/tags/timeline.tag
index 91bf7a637a..bce27cd7f3 100644
--- a/src/web/app/desktop/tags/timeline.tag
+++ b/src/web/app/desktop/tags/timeline.tag
@@ -10,16 +10,6 @@
 		:scope
 			display block
 
-			> mk-timeline-post
-				border-bottom solid 1px #eaeaea
-
-				&:first-child
-					border-top-left-radius 6px
-					border-top-right-radius 6px
-
-				&:last-of-type
-					border-bottom none
-
 			> .date
 				display block
 				margin 0
@@ -166,6 +156,18 @@
 			margin 0
 			padding 0
 			background #fff
+			border-bottom solid 1px #eaeaea
+
+			&:first-child
+				border-top-left-radius 6px
+				border-top-right-radius 6px
+
+				> .repost
+					border-top-left-radius 6px
+					border-top-right-radius 6px
+
+			&:last-of-type
+				border-bottom none
 
 			&:focus
 				z-index 1
diff --git a/src/web/app/mobile/tags/timeline.tag b/src/web/app/mobile/tags/timeline.tag
index 6895384a56..43470d197e 100644
--- a/src/web/app/mobile/tags/timeline.tag
+++ b/src/web/app/mobile/tags/timeline.tag
@@ -46,15 +46,6 @@
 					font-size 3em
 					color #ccc
 
-			> mk-timeline-post
-				border-bottom solid 1px #eaeaea
-
-				&:first-child
-					border-radius 8px 8px 0 0
-
-				&:last-of-type
-					border-bottom none
-
 			> .date
 				display block
 				margin 0
@@ -208,6 +199,16 @@
 			margin 0
 			padding 0
 			font-size 12px
+			border-bottom solid 1px #eaeaea
+
+			&:first-child
+				border-radius 8px 8px 0 0
+
+				> .repost
+					border-radius 8px 8px 0 0
+
+			&:last-of-type
+				border-bottom none
 
 			@media (min-width 350px)
 				font-size 14px