diff --git a/arch/riscv/include/asm/insn.h b/arch/riscv/include/asm/insn.h
index c3005573e8c999..ad348d8b885744 100644
--- a/arch/riscv/include/asm/insn.h
+++ b/arch/riscv/include/asm/insn.h
@@ -142,7 +142,7 @@
 #define RVG_OPCODE_JAL		0x6f
 #define RVG_OPCODE_SYSTEM	0x73
 #define RVG_SYSTEM_CSR_OFF	20
-#define RVG_SYSTEM_CSR_MASK	GENMASK(12, 0)
+#define RVG_SYSTEM_CSR_MASK	GENMASK(11, 0)
 
 /* parts of opcode for RVF, RVD and RVQ */
 #define RVFDQ_FL_FS_WIDTH_OFF	12