diff --git a/configure.ac b/configure.ac
index 0227166f0..18bfe2a05 100644
--- a/configure.ac
+++ b/configure.ac
@@ -355,6 +355,7 @@ if $have_freetype; then
 	LIBS="$LIBS $FREETYPE_LIBS"
 	AC_CHECK_FUNCS(FT_Get_Var_Blend_Coordinates)
 	AC_CHECK_FUNCS(FT_Set_Var_Blend_Coordinates)
+	AC_CHECK_FUNCS(FT_Done_MM_Var)
 	LIBS=$save_libs
 fi
 AM_CONDITIONAL(HAVE_FREETYPE, $have_freetype)
diff --git a/src/hb-ft.cc b/src/hb-ft.cc
index ae8c8d923..1c526cf37 100644
--- a/src/hb-ft.cc
+++ b/src/hb-ft.cc
@@ -651,7 +651,11 @@ hb_ft_font_changed (hb_font_t *font)
     }
     free (coords);
     free (ft_coords);
+#ifdef HAVE_FT_DONE_MM_VAR
+    FT_Done_MM_Var (ft_face->glyph->library, mm_var);
+#else
     free (mm_var);
+#endif
   }
 #endif
 }