diff --git a/README.md b/README.md
index a5a1db2..39bb565 100644
--- a/README.md
+++ b/README.md
@@ -343,7 +343,8 @@ Keybinding         | Description
 <kbd>C-c p f</kbd> | Display a list of all files in the project. With a prefix argument it will clear the cache first.
 <kbd>C-c p d</kbd> | Display a list of all directories in the project. With a prefix argument it will clear the cache first.
 <kbd>C-c p T</kbd> | Display a list of all test files(specs, features, etc) in the project.
-<kbd>C-c p g</kbd> | Run grep on the files in the project.
+<kbd>C-c p s g</kbd> | Run grep on the files in the project.
+<kbd>M-- C-c p s g</kbd> | Run grep on `projectile-grep-default-files` in the project.
 <kbd>C-c p b</kbd> | Display a list of all project buffers currently open.
 <kbd>C-c p o</kbd> | Runs `multi-occur` on all project buffers currently open.
 <kbd>C-c p r</kbd> | Runs interactive query-replace on all files in the projects.
@@ -352,11 +353,13 @@ Keybinding         | Description
 <kbd>C-c p k</kbd> | Kills all project buffers.
 <kbd>C-c p D</kbd> | Opens the root of the project in `dired`.
 <kbd>C-c p e</kbd> | Shows a list of recently visited project files.
+<kbd>C-c p s a</kbd> | Runs `ack` on the project. Requires the presence of `ack-and-a-half`.
+<kbd>C-c p s s</kbd> | Runs `ag` on the project. Requires the presence of `ag.el`.
 <kbd>C-c p a</kbd> | Runs `ack` on the project. Requires the presence of `ack-and-a-half`.
 <kbd>C-c p c</kbd> | Runs a standard compilation command for your type of project.
 <kbd>C-c p p</kbd> | Runs a standard test command for your type of project.
 <kbd>C-c p z</kbd> | Adds the currently visited to the cache.
-<kbd>C-c p s</kbd> | Display a list of known projects you can switch to.
+<kbd>C-c p p</kbd> | Display a list of known projects you can switch to.
 
 Prelude adds an extra keymap prefix `S-p` (`S` stands for
 `Super`), so you can use `S-p` instead of `C-c p`.
diff --git a/core/prelude-core.el b/core/prelude-core.el
index dfb87ff..5830d1d 100644
--- a/core/prelude-core.el
+++ b/core/prelude-core.el
@@ -380,8 +380,8 @@ Doesn't mess with special buffers."
 (defvar prelude-tips
   '("Press <C-c o> to open a file with external program."
     "Press <C-c p f> to navigate a project's files with ido."
-    "Press <C-c p g> to run grep on a project."
-    "Press <C-c p s> or <s-p> to switch between projects."
+    "Press <C-c p s g> to run grep on a project."
+    "Press <C-c p p> to switch between projects."
     "Press <C-=> to expand the selected region."
     "Press <C-c g> to search in Google."
     "Press <C-c G> to search in GitHub."