diff --git a/backend/dm200.c b/backend/dm200.c
index 466bfadf..5d0c5e86 100644
--- a/backend/dm200.c
+++ b/backend/dm200.c
@@ -27,7 +27,6 @@
 #include <stdlib.h>
 #include <ctype.h>
 #include <string.h>
-#include <malloc.h>
 #include "reedsol.h"
 #include "dm200.h"
 
diff --git a/backend/dmatrix.c b/backend/dmatrix.c
index 99b7be22..3fff9977 100644
--- a/backend/dmatrix.c
+++ b/backend/dmatrix.c
@@ -36,7 +36,6 @@
 #include <stdlib.h>
 #include <ctype.h>
 #include <string.h>
-#include <malloc.h>
 #include "dm200.h"
 #include "common.h"