diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index a705b3e..b0db77b 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -12,6 +12,7 @@
 * Assign the Issue to yourself (if unassigned) before you start working in order to avoid any conficts. 
 * Open a new GitHub pull request with the patch.
 * Ensure the PR description clearly describes the problem and solution. Include the relevant issue number.
+* Make sure that the PR points to the development branch.
 
 #### **Did you fix whitespace, format code, or make a purely cosmetic patch?**