diff --git a/docs/interop.md b/docs/interop.md
index 2247523..d1be78e 100644
--- a/docs/interop.md
+++ b/docs/interop.md
@@ -9,7 +9,7 @@ for that certain considerations are taken:
 * no opaque types, only keys
 * when mutation on input is done, - it shouldn't be achieved from a mutable pointer, but the return value
 * return value could be a simple aggregate that is translatable to pure data dictionary
-* module prefix is used for namespacing, actual symbols come after the prefix (`module_symbol`)
+* module prefix is used for namespacing, actual symbols come after the prefix (`<module>_<symbol>`)
 * symbols should not contain letters at the start nor after the namespace prefix
 * 32 bit floating point is the only numeric type
 * [/include/twn_api.json](../include/twn_api.json) file is hand-kept with a schema to aid automatic binding generation and tooling