diff --git a/ChangeLog b/ChangeLog
index 26859c49a..6755cc1e0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2016-09-08  Werner Lemberg  <wl@gnu.org>
+
+	* src/truetype/ttinterp.c: Include `ttgxvar.h'.
+
+	This fixes the `multi' build.
+
 2016-09-08  Werner Lemberg  <wl@gnu.org>
 
 	[autofit] Another improvement to Armenian support.
diff --git a/src/truetype/ttinterp.c b/src/truetype/ttinterp.c
index caeb6ca68..2d15ea712 100644
--- a/src/truetype/ttinterp.c
+++ b/src/truetype/ttinterp.c
@@ -31,6 +31,9 @@
 #include "ttinterp.h"
 #include "tterrors.h"
 #include "ttsubpix.h"
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+#include "ttgxvar.h"
+#endif
 
 
 #ifdef TT_USE_BYTECODE_INTERPRETER