diff --git a/src/viewer/svmnode.h b/src/viewer/svmnode.h
index bc202fc9b6..d6423ecd52 100644
--- a/src/viewer/svmnode.h
+++ b/src/viewer/svmnode.h
@@ -29,6 +29,8 @@
 
 #ifndef GRAPHICS_DISABLED
 
+#include <tesseract/export.h>
+
 #include <string>
 
 namespace tesseract {