diff --git a/kevent.go b/kevent.go
index 377a5f75e5ea3e722cba3278211869c4de53550e..254694115c353f79576cb38765e9da442d179fe1 100644
--- a/kevent.go
+++ b/kevent.go
@@ -225,7 +225,7 @@ 	case 'W':
 		e.jumpToLineEnd()
 	case 'g':
 		e.pendingKey = 'g'
-	case 'j':
+	case 'J':
 		e.saveState()
 		e.JoinLines()
 		e.checkDiagnostics()
@@ -651,6 +651,10 @@ 		return
 	}
 
 	switch ev.Ch {
+	case 'J':
+		e.saveState()
+		e.JoinLines()
+		e.checkDiagnostics()
 	case Config.LeaderKey:
 		e.pendingKey = Config.LeaderKey
 	case 'w':
@@ -756,6 +760,10 @@ 		return
 	}
 
 	switch ev.Ch {
+	case 'J':
+		e.saveState()
+		e.JoinLines()
+		e.checkDiagnostics()
 	case Config.LeaderKey:
 		e.pendingKey = Config.LeaderKey
 	case 'w':
@@ -860,6 +868,10 @@ 		return
 	}
 
 	switch ev.Ch {
+	case 'J':
+		e.saveState()
+		e.JoinLines()
+		e.checkDiagnostics()
 	case Config.LeaderKey:
 		e.pendingKey = Config.LeaderKey
 	case 'w':