diff --git a/src/devices/cpu/arm/arm.cpp b/src/devices/cpu/arm/arm.cpp
index a51e1fd8882..1b342b3ea56 100644
--- a/src/devices/cpu/arm/arm.cpp
+++ b/src/devices/cpu/arm/arm.cpp
@@ -675,7 +675,7 @@ void arm_cpu_device::HandleMemSingle( uint32_t insn )
 		{
 			if (rd == eR15)
 			{
-				R15 = (cpu_read32(rnv) & ADDRESS_MASK) | (R15 & PSR_MASK) | (R15 & MODE_MASK);
+				R15 = (cpu_read32(rnv) & ADDRESS_MASK) | (R15 & PSR_MASK) | (R15 & IRQ_MASK) | (R15 & MODE_MASK);
 
 				/*
 				The docs are explicit in that the bottom bits should be masked off
@@ -1364,7 +1364,7 @@ uint32_t arm_cpu_device::decodeShift(uint32_t insn, uint32_t *pCarry)
 		if (k)
 		{
 			while (k > 32) k -= 32;
-			if (pCarry) *pCarry = rm & SIGN_BIT;
+			if (pCarry) *pCarry = rm & (1 << (k - 1));
 			return ROR(rm, k);
 		}
 		else