diff --git a/docs/c-language/storage-class-specifiers-for-external-level-declarations.md b/docs/c-language/storage-class-specifiers-for-external-level-declarations.md
index 7eb9b1d56b..c4b93d2c53 100644
--- a/docs/c-language/storage-class-specifiers-for-external-level-declarations.md
+++ b/docs/c-language/storage-class-specifiers-for-external-level-declarations.md
@@ -51,6 +51,7 @@ The example below illustrates external declarations:
 #include <stdio.h>
 
 extern int i;                // Reference to i, defined below
+extern void other ( void );  // Reference to other(), defined in second source file
 void next( void );           // Function prototype
 
 int main()