diff --git a/docs/api-doc.md b/docs/api-doc.md
index e59b54e952..472fc4182a 100644
--- a/docs/api-doc.md
+++ b/docs/api-doc.md
@@ -51,6 +51,10 @@ process. The compiler has two different modes: direct input as a string with
 `Sass_File_Context`. See the code for a list of options available
 [Sass_Options](https://github.com/sass/libsass/blob/36feef0/include/sass/interface.h#L18)
 
+The general rule is if the API takes const char* it will make a copy, 
+but where the API is char* it will take over memory ownership, so make sure to pass 
+in memory that is allocated via sass_copy_c_string or sass_alloc_memory.
+
 **Building a file compiler**
 
     context = sass_make_file_context("file.scss")
@@ -73,7 +77,11 @@ process. The compiler has two different modes: direct input as a string with
 
 **Building a data compiler**
 
-    context = sass_make_data_context("div { a { color: blue; } }")
+    // Use sass_copy_c_string or sass_alloc_memory so that libsass can
+    // be sure to manage the memory correctly!
+
+    char* data = sass_copy_c_string("div { a { color: blue; } }");
+    context = Sass_Data_Context* data_ctx = sass_make_data_context(data);
     options = sass_data_context_get_options(context)
     sass_option_set_precision(options, 1)
     sass_option_set_source_comments(options, true)