diff --git a/src/include/unit_cache.h b/src/include/unit_cache.h
index a339c5903..b39251db3 100644
--- a/src/include/unit_cache.h
+++ b/src/include/unit_cache.h
@@ -37,7 +37,6 @@
 
 #include <vector>
 #include <algorithm>
-#include <stdio.h>
 
 /*----------------------------------------------------------------------------
 --  Declarations