diff --git a/make/aix/makefiles/ppc64.make b/make/aix/makefiles/ppc64.make
index 079d0764769d408e25d534df9b243f8ecfe29911..2636a4b97429fbc5d7c88e56839b99762f8dc60a 100644
--- a/make/aix/makefiles/ppc64.make
+++ b/make/aix/makefiles/ppc64.make
@@ -46,7 +46,9 @@ CFLAGS += -qsuppress=1540-0198
 #  - 1540-1090 (I) The destructor of "..." might not be called.
 #  - 1500-010: (W) WARNING in ...: Infinite loop.  Program may not stop.
 #    There are several infinite loops in the vm, suppress.
-CFLAGS += -qsuppress=1540-1090 -qsuppress=1500-010
+#  - 1540-1639 (I) The behavior of long type bit fields has changed ...
+#                  ... long type bit fields now default to long, not int.
+CFLAGS += -qsuppress=1540-1090 -qsuppress=1500-010 -qsuppress=1540-1639
 
 # Suppress 
 #  - 540-1088 (W) The exception specification is being ignored.
diff --git a/make/aix/makefiles/xlc.make b/make/aix/makefiles/xlc.make
index fa2ceaf25242ab0f80f30902add64ef741161a4c..17a71b6012447f51c824841932d422a80aaa4702 100644
--- a/make/aix/makefiles/xlc.make
+++ b/make/aix/makefiles/xlc.make
@@ -130,7 +130,7 @@ STATIC_STDCXX = -Wl,-lC_r
 # MAPFLAG = -Xlinker --version-script=FILENAME
 
 # Build shared library
-SHARED_FLAG = -q64 -b64 -bexpall -G -bnoentry -qmkshrobj -brtl -bnolibpath
+SHARED_FLAG = -q64 -b64 -bexpall -G -bnoentry -qmkshrobj -brtl -bnolibpath -bernotok
 
 #------------------------------------------------------------------------
 # Debug flags