diff --git a/qemu/ioport.c b/qemu/ioport.c
index f4e56510..338a296a 100644
--- a/qemu/ioport.c
+++ b/qemu/ioport.c
@@ -69,7 +69,7 @@ void cpu_outb(struct uc_struct *uc, pio_addr_t addr, uint8_t val)
     // Unicorn: call interrupt callback if registered
     if (uc->hook_out_idx)
         ((uc_cb_insn_out_t)uc->hook_callbacks[uc->hook_out_idx].callback)(
-            (uch)uc, addr, 1, val,
+            uc, addr, 1, val,
             uc->hook_callbacks[uc->hook_out_idx].user_data);
 }
 
@@ -79,7 +79,7 @@ void cpu_outw(struct uc_struct *uc, pio_addr_t addr, uint16_t val)
     // Unicorn: call interrupt callback if registered
     if (uc->hook_out_idx)
         ((uc_cb_insn_out_t)uc->hook_callbacks[uc->hook_out_idx].callback)(
-            (uch)uc, addr, 2, val,
+            uc, addr, 2, val,
             uc->hook_callbacks[uc->hook_out_idx].user_data);
 }
 
@@ -88,7 +88,7 @@ void cpu_outl(struct uc_struct *uc, pio_addr_t addr, uint32_t val)
     //LOG_IOPORT("outl: %04"FMT_pioaddr" %08"PRIx32"\n", addr, val);
     if (uc->hook_out_idx)
         ((uc_cb_insn_out_t)uc->hook_callbacks[uc->hook_out_idx].callback)(
-            (uch)uc, addr, 4, val,
+            uc, addr, 4, val,
             uc->hook_callbacks[uc->hook_out_idx].user_data);
 }
 
@@ -97,7 +97,7 @@ uint8_t cpu_inb(struct uc_struct *uc, pio_addr_t addr)
     //LOG_IOPORT("inb : %04"FMT_pioaddr" %02"PRIx8"\n", addr, val);
     if (uc->hook_in_idx)
         return ((uc_cb_insn_in_t)uc->hook_callbacks[uc->hook_in_idx].callback)(
-            (uch)uc, addr, 1,
+            uc, addr, 1,
             uc->hook_callbacks[uc->hook_in_idx].user_data);
 
     return 0;
@@ -108,7 +108,7 @@ uint16_t cpu_inw(struct uc_struct *uc, pio_addr_t addr)
     //LOG_IOPORT("inw : %04"FMT_pioaddr" %04"PRIx16"\n", addr, val);
     if (uc->hook_in_idx)
         return ((uc_cb_insn_in_t)uc->hook_callbacks[uc->hook_in_idx].callback)(
-            (uch)uc, addr, 2,
+            uc, addr, 2,
             uc->hook_callbacks[uc->hook_in_idx].user_data);
 
     return 0;
@@ -119,7 +119,7 @@ uint32_t cpu_inl(struct uc_struct *uc, pio_addr_t addr)
     //LOG_IOPORT("inl : %04"FMT_pioaddr" %08"PRIx32"\n", addr, val);
     if (uc->hook_in_idx)
         return ((uc_cb_insn_in_t)uc->hook_callbacks[uc->hook_in_idx].callback)(
-            (uch)uc, addr, 4,
+            uc, addr, 4,
             uc->hook_callbacks[uc->hook_in_idx].user_data);
 
     return 0;