diff --git a/tests/libqos/ahci.c b/tests/libqos/ahci.c
index 0e9354bf13..99e85d5b31 100644
--- a/tests/libqos/ahci.c
+++ b/tests/libqos/ahci.c
@@ -86,6 +86,7 @@ struct AHCICommand {
     uint8_t name;
     uint8_t port;
     uint8_t slot;
+    uint8_t errors;
     uint32_t interrupts;
     uint64_t xbytes;
     uint32_t prd_size;
@@ -402,12 +403,14 @@ void ahci_port_clear(AHCIQState *ahci, uint8_t port)
 /**
  * Check a port for errors.
  */
-void ahci_port_check_error(AHCIQState *ahci, uint8_t port)
+void ahci_port_check_error(AHCIQState *ahci, uint8_t port,
+                           uint32_t imask, uint8_t emask)
 {
     uint32_t reg;
 
     /* The upper 9 bits of the IS register all indicate errors. */
     reg = ahci_px_rreg(ahci, port, AHCI_PX_IS);
+    reg &= ~imask;
     reg >>= 23;
     g_assert_cmphex(reg, ==, 0);
 
@@ -417,8 +420,13 @@ void ahci_port_check_error(AHCIQState *ahci, uint8_t port)
 
     /* The TFD also has two error sections. */
     reg = ahci_px_rreg(ahci, port, AHCI_PX_TFD);
-    ASSERT_BIT_CLEAR(reg, AHCI_PX_TFD_STS_ERR);
-    ASSERT_BIT_CLEAR(reg, AHCI_PX_TFD_ERR);
+    if (!emask) {
+        ASSERT_BIT_CLEAR(reg, AHCI_PX_TFD_STS_ERR);
+    } else {
+        ASSERT_BIT_SET(reg, AHCI_PX_TFD_STS_ERR);
+    }
+    ASSERT_BIT_CLEAR(reg, AHCI_PX_TFD_ERR & (~emask << 8));
+    ASSERT_BIT_SET(reg, AHCI_PX_TFD_ERR & (emask << 8));
 }
 
 void ahci_port_check_interrupts(AHCIQState *ahci, uint8_t port,
@@ -1119,7 +1127,7 @@ void ahci_command_verify(AHCIQState *ahci, AHCICommand *cmd)
     uint8_t slot = cmd->slot;
     uint8_t port = cmd->port;
 
-    ahci_port_check_error(ahci, port);
+    ahci_port_check_error(ahci, port, cmd->interrupts, cmd->errors);
     ahci_port_check_interrupts(ahci, port, cmd->interrupts);
     ahci_port_check_nonbusy(ahci, port, slot);
     ahci_port_check_cmd_sanity(ahci, cmd);
diff --git a/tests/libqos/ahci.h b/tests/libqos/ahci.h
index f144fab37a..bbe04f834a 100644
--- a/tests/libqos/ahci.h
+++ b/tests/libqos/ahci.h
@@ -576,7 +576,8 @@ void ahci_set_command_header(AHCIQState *ahci, uint8_t port,
 void ahci_destroy_command(AHCIQState *ahci, uint8_t port, uint8_t slot);
 
 /* AHCI sanity check routines */
-void ahci_port_check_error(AHCIQState *ahci, uint8_t port);
+void ahci_port_check_error(AHCIQState *ahci, uint8_t port,
+                           uint32_t imask, uint8_t emask);
 void ahci_port_check_interrupts(AHCIQState *ahci, uint8_t port,
                                 uint32_t intr_mask);
 void ahci_port_check_nonbusy(AHCIQState *ahci, uint8_t port, uint8_t slot);