diff --git a/contrib/python/hooks.py b/contrib/python/hooks.py
index a4726e49..28cbf32b 100644
--- a/contrib/python/hooks.py
+++ b/contrib/python/hooks.py
@@ -49,7 +49,8 @@ dumbprefixes = {
 def goto_url_hook(url):
     """Rewrite a URL that was entered in a "Go to URL" dialog box.
 
-    This function should return a URL for ELinks to follow, or None if
+    This function should return a string containing a URL for ELinks to
+    follow, or an empty string if no URL should be followed, or None if
     ELinks should follow the original URL.
 
     Arguments:
@@ -63,7 +64,8 @@ def goto_url_hook(url):
 def follow_url_hook(url):
     """Rewrite a URL for a link that's about to be followed.
 
-    This function should return a URL for ELinks to follow, or None if
+    This function should return a string containing a URL for ELinks to
+    follow, or an empty string if no URL should be followed, or None if
     ELinks should follow the original URL.
 
     Arguments:
diff --git a/doc/python.txt b/doc/python.txt
index a5225150..62707ed7 100644
--- a/doc/python.txt
+++ b/doc/python.txt
@@ -37,7 +37,8 @@ FUNCTIONS
     follow_url_hook(url)
         Rewrite a URL for a link that's about to be followed.
         
-        This function should return a URL for ELinks to follow, or None if
+        This function should return a string containing a URL for ELinks to
+        follow, or an empty string if no URL should be followed, or None if
         ELinks should follow the original URL.
         
         Arguments:
@@ -47,7 +48,8 @@ FUNCTIONS
     goto_url_hook(url)
         Rewrite a URL that was entered in a "Go to URL" dialog box.
         
-        This function should return a URL for ELinks to follow, or None if
+        This function should return a string containing a URL for ELinks to
+        follow, or an empty string if no URL should be followed, or None if
         ELinks should follow the original URL.
         
         Arguments: