diff --git a/riscv32_virt/liteos_m/board/include/asm/soc.h b/riscv32_virt/liteos_m/board/include/asm/soc.h
index 52dc4f496b0e5e1f53da07b279cdf76b0647feac..34e079164e288ee7af9b508b60f3d5225582e082 100644
--- a/riscv32_virt/liteos_m/board/include/asm/soc.h
+++ b/riscv32_virt/liteos_m/board/include/asm/soc.h
@@ -21,7 +21,6 @@
  * Get the response interrupt number via mcause.
  * id = mcause & MCAUSE_INT_ID_MASK
  */
-#define MCAUSE_INT_ID_MASK                            0x7FFFFFF
 #define MSIP                                          0x2000000
 #define MTIMERCMP                                     0x2004000
 #define MTIMER                                        0x200BFF8
diff --git a/riscv32_virt/liteos_m/board/target_config.h b/riscv32_virt/liteos_m/board/target_config.h
index 9640efdef41315f4b92f584c00f37256ba699d51..c1b7785eb7030185319d7c7e4d2cf4b9e5cc8ee3 100644
--- a/riscv32_virt/liteos_m/board/target_config.h
+++ b/riscv32_virt/liteos_m/board/target_config.h
@@ -60,7 +60,7 @@ extern "C" {
                                        Mutex module configuration
 =============================================================================*/
 #define LOSCFG_BASE_IPC_MUX                                 1
-#define LOSCFG_BASE_IPC_MUX_LIMIT                           24
+#define LOSCFG_BASE_IPC_MUX_LIMIT                           50
 /*=============================================================================
                                        Queue module configuration
 =============================================================================*/