diff --git a/src/buffer.c b/src/buffer.c
index 7282ede179e..19c9682f5da 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -5392,17 +5392,17 @@ Automatically becomes buffer-local when set in any fashion.\n");
   DEFVAR_PER_BUFFER ("scroll-up-aggressively",
 		     &current_buffer->scroll_up_aggressively, Qnil,
     "*If a number, scroll display up aggressively.\n\
-If scrolling a window because point is above the window start, choose\n\
+If scrolling a window because point is below the window end, choose\n\
 a new window start so that point ends up that fraction of the window's\n\
-height from the top of the window.\n\
+height from the bottom of the window.\n\
 Automatically becomes buffer-local when set in any fashion.");
   
   DEFVAR_PER_BUFFER ("scroll-down-aggressively",
 		     &current_buffer->scroll_down_aggressively, Qnil,
     "*If a number, scroll display down aggressively.\n\
-If scrolling a window because point is below the window end, choose\n\
+If scrolling a window because point is above the window start, choose\n\
 a new window start so that point ends up that fraction of the window's\n\
-height from the bottom of the window.\n\
+height from the top of the window.\n\
 Automatically becomes buffer-local when set in any fashion.");
   
 /*DEFVAR_LISP ("debug-check-symbol", &Vcheck_symbol,