doc/lsp.txt | 6 ++++--

diff --git a/doc/lsp.txt b/doc/lsp.txt
index 6a75fbfb8a688d0323d2e322d5ed6bf0c924918e..91abc465558f9be3add33b8f2b76330c3e653399 100644
--- a/doc/lsp.txt
+++ b/doc/lsp.txt
@@ -477,8 +477,10 @@ 			If [count] exceeds the number of diagnostics after the
 			current position, then the last diagnostic is selected.
 
 						*:LspDiagPrev*
-:LspDiagPrev		Jumps to the location of the diagnostic message before
-			the current cursor position.
+:[count]LspDiagPrev	Go to the [count] diagnostic message before the current
+			cursor position.  If [count] is omitted, then 1 is used.
+			If [count] exceeds the number of diagnostics before the
+			current position, then first last diagnostic is selected.
 
 						*:LspDiagShow*
 :LspDiagShow		Creates a new location list with the diagnostics