diff --git a/Core/MIPS/ARM/ArmCompALU.cpp b/Core/MIPS/ARM/ArmCompALU.cpp
index 50a709622c..18e0366ce7 100644
--- a/Core/MIPS/ARM/ArmCompALU.cpp
+++ b/Core/MIPS/ARM/ArmCompALU.cpp
@@ -488,7 +488,9 @@ namespace MIPSComp
 			return;
 		}
 		gpr.MapDirtyInIn(rd, rs, rt);
-		AND(R0, gpr.R(rs), Operand2(0x1F));
+		// A rotate will be the same even if >= 32.
+		if (shiftType != ST_ROR)
+			AND(R0, gpr.R(rs), Operand2(0x1F));
 		MOV(gpr.R(rd), Operand2(gpr.R(rt), shiftType, R0));
 	}