diff --git a/eeschema/sch_plugins/legacy/sch_legacy_plugin_helpers.cpp b/eeschema/sch_plugins/legacy/sch_legacy_plugin_helpers.cpp
index afa2f16a8c..5c366226b5 100644
--- a/eeschema/sch_plugins/legacy/sch_legacy_plugin_helpers.cpp
+++ b/eeschema/sch_plugins/legacy/sch_legacy_plugin_helpers.cpp
@@ -25,6 +25,7 @@
 #include <macros.h>
 #include <richio.h>
 
+#include <config.h> // contains strncasecmp for msvc
 #include "sch_legacy_plugin_helpers.h"