diff --git a/config.tests/libmng/libmng.cpp b/config.tests/libmng/libmng.cpp
index 850dab1167b17eaa126deed85d655f6ece7daf5a..8d8a27b878e461d0b7582990ffefcb690ace44bf 100644
--- a/config.tests/libmng/libmng.cpp
+++ b/config.tests/libmng/libmng.cpp
@@ -31,6 +31,7 @@
 **
 ****************************************************************************/
 
+#include <stdio.h>
 #include <libmng.h>
 
 int main(int, char **)