diff --git a/testdoc b/testdoc
index b4f7e0f..a0c90c6 100644
--- a/testdoc
+++ b/testdoc
@@ -47,9 +47,11 @@ list in list:
 entity: &, <, >
 
 code:
+```
 	int powerof2(unsigned int n) {
 		return !((n - 1) & n) && n > 0;
 	}
+```
 
 links
 -----