diff --git a/gas/config/ho-generic.h b/gas/config/ho-generic.h
index 967603fef3e..1d0d99f766c 100644
--- a/gas/config/ho-generic.h
+++ b/gas/config/ho-generic.h
@@ -25,6 +25,8 @@
 
 #define HAVE_STRERROR
 
+#include <string.h>
+
 #ifdef __STDC__
 extern void *malloc (), *realloc ();
 #else