diff --git a/Ghidra/Processors/PowerPC/data/languages/ppc_a2.sinc b/Ghidra/Processors/PowerPC/data/languages/ppc_a2.sinc
index 4de9773933..28296d72d2 100644
--- a/Ghidra/Processors/PowerPC/data/languages/ppc_a2.sinc
+++ b/Ghidra/Processors/PowerPC/data/languages/ppc_a2.sinc
@@ -85,14 +85,6 @@ define pcodeop wclrallOp;
 define pcodeop wclrOp;
 # :wclr L,A,B is $(NOTVLE) & OP=31 & XOP_1_10=934 & L & A & B  { wclrOp(); } 
 
-@ifdef IS_ISA
-# binutils: 476.d 474:  7c 00 06 ac     mbar    
-# binutils: 476.d 47c:  7c 20 06 ac     mbar    1
-# "mbar",	X(31,854),	X_MASK, BOOKE|PPCA2|PPC476, PPCNONE,	{MO}
-define pcodeop mbarOp;
-:mbar MO is OP=31 & XOP_1_10=854 & MO  { mbarOp(); } 
-@endif
-
 # binutils: a2.d:  514: 7d 4a 3a 87     mfdcr\.  r10,234
 :mfdcr. D, DCRN		is $(NOTVLE) & OP=31 & D & DCRN & XOP_1_10=323 & BIT_0=1
 {
diff --git a/Ghidra/Processors/PowerPC/data/languages/ppc_embedded.sinc b/Ghidra/Processors/PowerPC/data/languages/ppc_embedded.sinc
index 4a07bc7632..a7ea6f3cda 100644
--- a/Ghidra/Processors/PowerPC/data/languages/ppc_embedded.sinc
+++ b/Ghidra/Processors/PowerPC/data/languages/ppc_embedded.sinc
@@ -49,13 +49,12 @@
 	dataCacheBlockClearToZero(ea);
 }
 
-@ifndef IS_ISA
-# this is equilent to "mbar 0"
-#eieio 			0x7c 00 06 ac
-:eieio			is OP=31 & BITS_21_25=0 & BITS_16_20=0 & BITS_11_15=0 & XOP_1_10=854 & BIT_0=0
-{
-	enforceInOrderExecutionIO();
-}
+@ifdef IS_ISA
+# binutils: 476.d 474:  7c 00 06 ac     mbar
+# binutils: 476.d 47c:  7c 20 06 ac     mbar    1
+# "mbar",	X(31,854),	X_MASK, BOOKE|PPCA2|PPC476, PPCNONE,	{MO}
+define pcodeop mbarOp;
+:mbar MO is OP=31 & XOP_1_10=854 & MO  { mbarOp(); }
 @endif
 
 #icbi r0,r0		0x7c 00 07 ac