diff --git a/src/nvim/terminal.c b/src/nvim/terminal.c
index 782a37d6ed..ac29dbc0eb 100644
--- a/src/nvim/terminal.c
+++ b/src/nvim/terminal.c
@@ -1416,13 +1416,14 @@ static void mouse_action(Terminal *term, int button, int row, int col, bool pres
 static bool send_mouse_event(Terminal *term, int c)
 {
   int row = mouse_row, col = mouse_col, grid = mouse_grid;
-  int offset;
   win_T *mouse_win = mouse_find_win(&grid, &row, &col);
-  if (mouse_win == NULL || (offset = win_col_off(mouse_win)) > col) {
+  if (mouse_win == NULL) {
     goto end;
   }
 
-  if (term->forward_mouse && mouse_win->w_buffer->terminal == term) {
+  int offset;
+  if (term->forward_mouse && mouse_win->w_buffer->terminal == term
+      && col >= (offset = win_col_off(mouse_win))) {
     // event in the terminal window and mouse events was enabled by the
     // program. translate and forward the event
     int button;
diff --git a/test/functional/terminal/mouse_spec.lua b/test/functional/terminal/mouse_spec.lua
index 6591a93d69..944fc4f48a 100644
--- a/test/functional/terminal/mouse_spec.lua
+++ b/test/functional/terminal/mouse_spec.lua
@@ -338,7 +338,7 @@ describe(':terminal mouse', function()
           {3:-- TERMINAL --}                                    |
         ]])
         command('set mousescroll=ver:10')
-        feed('<ScrollWheelUp><4,0>')
+        feed('<ScrollWheelUp><0,0>')
         screen:expect([[
           {7: 16 }line                 │line30                  |
           {7: 17 }line                 │rows: 5, cols: 25       |
@@ -349,7 +349,7 @@ describe(':terminal mouse', function()
           {3:-- TERMINAL --}                                    |
         ]])
         command('set mousescroll=ver:0')
-        feed('<ScrollWheelUp><4,0>')
+        feed('<ScrollWheelUp><0,0>')
         screen:expect_unchanged()
       end)