diff --git a/tools/abx/abx2raw.c b/tools/abx/abx2raw.c
index 4159cad87..d021a83dd 100644
--- a/tools/abx/abx2raw.c
+++ b/tools/abx/abx2raw.c
@@ -9,6 +9,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 #include "abx2raw.h"
 
diff --git a/tools/aif/aif2raw.c b/tools/aif/aif2raw.c
index 40dfcfaec..25787943d 100644
--- a/tools/aif/aif2raw.c
+++ b/tools/aif/aif2raw.c
@@ -8,6 +8,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 #include "aif2raw.h"