diff --git a/src/cairo-quartz-font.c b/src/cairo-quartz-font.c
index a50dc404a..9e2298a48 100644
--- a/src/cairo-quartz-font.c
+++ b/src/cairo-quartz-font.c
@@ -38,6 +38,7 @@
 
 #include <dlfcn.h>
 
+#include "cairo-image-surface-private.h"
 #include "cairo-quartz.h"
 #include "cairo-quartz-private.h"
 
diff --git a/src/cairo-quartz-surface.c b/src/cairo-quartz-surface.c
index 23b2b33b4..0f015c81d 100644
--- a/src/cairo-quartz-surface.c
+++ b/src/cairo-quartz-surface.c
@@ -41,6 +41,7 @@
 
 #include "cairo-default-context-private.h"
 #include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
 #include "cairo-pattern-private.h"
 #include "cairo-surface-clipper-private.h"