diff --git a/src/sysdep.c b/src/sysdep.c
index 78379934347..3a6829dd27a 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -36,7 +36,6 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */
 #include <utimens.h>
 
 #include "lisp.h"
-#include "sheap.h"
 #include "sysselect.h"
 #include "blockinput.h"