diff --git a/base/tuple.jl b/base/tuple.jl
index 39c73a52c5a98..cc22ea75c041c 100644
--- a/base/tuple.jl
+++ b/base/tuple.jl
@@ -77,8 +77,8 @@ keys(@nospecialize t::Tuple) = OneTo(length(t))
 """
     prevind(A, i)
 
-Return the index before `i` in `A`. The returned index is often equivalent to `i
-- 1` for an integer `i`. This function can be useful for generic code.
+Return the index before `i` in `A`. The returned index is often equivalent to
+`i - 1` for an integer `i`. This function can be useful for generic code.
 
 !!! warning
     The returned index might be out of bounds. Consider using
@@ -111,8 +111,8 @@ function prevind end
 """
     nextind(A, i)
 
-Return the index after `i` in `A`. The returned index is often equivalent to `i
-+ 1` for an integer `i`. This function can be useful for generic code.
+Return the index after `i` in `A`. The returned index is often equivalent to
+`i + 1` for an integer `i`. This function can be useful for generic code.
 
 !!! warning
     The returned index might be out of bounds. Consider using