diff --git a/arch/risc-v/src/bl602/bl602_irq_dispatch.c b/arch/risc-v/src/bl602/bl602_irq_dispatch.c
index b21aa1c1fb6..1d8c06b8ae5 100644
--- a/arch/risc-v/src/bl602/bl602_irq_dispatch.c
+++ b/arch/risc-v/src/bl602/bl602_irq_dispatch.c
@@ -67,7 +67,7 @@ void *bl602_dispatch_irq(uint32_t vector, uint32_t *regs)
 
   if (BL602_IRQ_ECALLM == irq)
     {
-      *mepc += 4;
+      *mepc += 2;
     }
 
   /* Acknowledge the interrupt */
diff --git a/arch/risc-v/src/fe310/fe310_irq_dispatch.c b/arch/risc-v/src/fe310/fe310_irq_dispatch.c
index 26c88e5d7a3..ba3e73601b7 100644
--- a/arch/risc-v/src/fe310/fe310_irq_dispatch.c
+++ b/arch/risc-v/src/fe310/fe310_irq_dispatch.c
@@ -72,7 +72,7 @@ void *fe310_dispatch_irq(uint32_t vector, uint32_t *regs)
 
   if (FE310_IRQ_ECALLM == irq)
     {
-      *mepc += 4;
+      *mepc += 2;
     }
 
   /* Acknowledge the interrupt */
diff --git a/arch/risc-v/src/rv32m1/rv32m1_irq_dispatch.c b/arch/risc-v/src/rv32m1/rv32m1_irq_dispatch.c
index aba75551a48..ae0fe3bc04a 100644
--- a/arch/risc-v/src/rv32m1/rv32m1_irq_dispatch.c
+++ b/arch/risc-v/src/rv32m1/rv32m1_irq_dispatch.c
@@ -65,7 +65,7 @@ void *rv32m1_dispatch_irq(uint32_t vector, uint32_t *regs)
 
   if (RV32M1_IRQ_ECALL_M == irq)
     {
-      *mepc += 4;
+      *mepc += 2;
     }
 
   if (RV32M1_IRQ_INTMUX0 <= irq)