diff --git a/eeschema/sch_plugins/altium/altium_parser_sch.cpp b/eeschema/sch_plugins/altium/altium_parser_sch.cpp
index bac7716792..21ab76bae4 100644
--- a/eeschema/sch_plugins/altium/altium_parser_sch.cpp
+++ b/eeschema/sch_plugins/altium/altium_parser_sch.cpp
@@ -27,6 +27,7 @@
 
 #include <convert_to_biu.h>
 #include <ki_exception.h>
+#include <math/util.h>
 
 #include <wx/log.h>