diff --git a/src/target/mips32.h b/src/target/mips32.h
index 6f73d321d..049ce8f50 100644
--- a/src/target/mips32.h
+++ b/src/target/mips32.h
@@ -94,7 +94,7 @@ typedef struct mips32_core_reg_s
 #define MIPS32_COP0_MF	0x00
 #define MIPS32_COP0_MT	0x04
 
-#define MIPS32_R_INST(opcode, rs, rt, rd, shamt, funct)	(((opcode)<<26) |((rs)<<21)|((rt)<<16)|((rd)<<11)| ((shamt)<<5) | (funct))
+#define MIPS32_R_INST(opcode, rs, rt, rd, shamt, funct)	(((opcode)<<26) |((rs)<<21)|((rt)<<16)|((rd)<<11)| ((shamt)<<6) | (funct))
 #define MIPS32_I_INST(opcode, rs, rt, immd)	(((opcode)<<26) |((rs)<<21)|((rt)<<16)|(immd))
 #define MIPS32_J_INST(opcode, addr)	(((opcode)<<26) |(addr))