diff --git a/sha1collisiondetection b/sha1collisiondetection
index 1603399..855827c 160000
--- a/sha1collisiondetection
+++ b/sha1collisiondetection
@@ -1 +1 @@
-Subproject commit 16033998da4b273aebd92c84b1e1b12e4aaf7009
+Subproject commit 855827c583bc30645ba427885caa40c5b81764d2
diff --git a/sha1dc/sha1.c b/sha1dc/sha1.c
index 5931cf2..9d3cf81 100644
--- a/sha1dc/sha1.c
+++ b/sha1dc/sha1.c
@@ -93,7 +93,7 @@
 #define SHA1DC_BIGENDIAN
 
 /* Not under GCC-alike or glibc or *BSD or newlib or <processor whitelist> */
-#elif (defined(_AIX))
+#elif (defined(_AIX) || defined(__hpux))
 
 /*
  * Defines Big Endian on a whitelist of OSs that are known to be Big