diff -up mozilla-aurora/build/autoconf/icu.m4.icu-endian mozilla-aurora/build/autoconf/icu.m4
--- mozilla-aurora/build/autoconf/icu.m4.icu-endian	2016-12-09 09:11:01.227317790 +0100
+++ mozilla-aurora/build/autoconf/icu.m4	2016-12-09 09:18:40.608712247 +0100
@@ -78,7 +78,7 @@ if test -n "$USE_ICU"; then
     # TODO: the l is actually endian-dependent
     # We could make this set as 'l' or 'b' for little or big, respectively,
     # but we'd need to check in a big-endian version of the file.
-    ICU_DATA_FILE="icudt${version}l.dat"
+    ICU_DATA_FILE="icudt${version}b.dat"
 
     dnl We won't build ICU data as a separate file when building
     dnl JS standalone so that embedders don't have to deal with it.