diff --git a/ChangeLog b/ChangeLog
index c57f562..190efa6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2021-06-08  Werner Lemberg  <wl@gnu.org>
 
+	* src/sdf/ftsdfcommon.c: Fix inclusion of header files.
+
+2021-06-08  Werner Lemberg  <wl@gnu.org>
+
 	[sdf] Make `make multi` work.
 
 	* src/sdf/ftsdf.c: Include `ftbitmap.h`.
diff --git a/src/sdf/ftsdfcommon.c b/src/sdf/ftsdfcommon.c
index 031f2ba..91aa521 100644
--- a/src/sdf/ftsdfcommon.c
+++ b/src/sdf/ftsdfcommon.c
@@ -18,8 +18,8 @@
  */
 
 
-#include <ftsdf.h>
-#include <ftsdfcommon.h>
+#include "ftsdf.h"
+#include "ftsdfcommon.h"
 
 
   /**************************************************************************