diff --git a/dtool/src/parser-inc/ft2build.h b/dtool/src/parser-inc/ft2build.h
index 5f38c7d9d4..bbe59d244b 100644
--- a/dtool/src/parser-inc/ft2build.h
+++ b/dtool/src/parser-inc/ft2build.h
@@ -31,6 +31,7 @@
 class FT_Face;
 class FT_Library;
 class FT_Bitmap;
+class FT_Vector;
 
 #endif