diff --git a/bfd/hosts/hppahpux.h b/bfd/hosts/hppahpux.h
index 4c7f1dc9e0d..08e08140c30 100644
--- a/bfd/hosts/hppahpux.h
+++ b/bfd/hosts/hppahpux.h
@@ -6,6 +6,9 @@
 #include <ctype.h>
 #include <string.h>
 #include <sys/file.h>
+
+void free();
+
 #ifndef O_ACCMODE
 #define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR)
 #endif