diff --git a/backend/microtek2.c b/backend/microtek2.c
index d56e568..1aafa80 100644
--- a/backend/microtek2.c
+++ b/backend/microtek2.c
@@ -4276,6 +4276,8 @@ scsi_send_gamma(Microtek2_Scanner *ms)
 
 /*---------- scsi_inquiry() --------------------------------------------------*/
 
+#include <stdio.h>
+
 static SANE_Status
 scsi_inquiry(Microtek2_Info *mi, char *device)
 {
@@ -4286,6 +4288,7 @@ scsi_inquiry(Microtek2_Info *mi, char *device)
     size_t size;
     int sfd;
 
+    printf("A %p %s\n", mi, device);
 
     DBG(30, "scsi_inquiry: mi=%p, device='%s'\n", (void *) mi, device);
 
@@ -4296,6 +4299,8 @@ scsi_inquiry(Microtek2_Info *mi, char *device)
         return status;
       }
 
+    printf("B\n");
+
     INQ_CMD(cmd);
     INQ_SET_ALLOC(cmd, INQ_ALLOC_L);
     result = (uint8_t *) alloca(INQ_ALLOC_L);
@@ -4306,6 +4311,8 @@ scsi_inquiry(Microtek2_Info *mi, char *device)
         return SANE_STATUS_NO_MEM;
       }
 
+    printf("C\n");
+
     size = INQ_ALLOC_L;
     status = sanei_scsi_cmd(sfd, cmd, sizeof(cmd), result, &size);
     if ( status != SANE_STATUS_GOOD )
@@ -4315,6 +4322,8 @@ scsi_inquiry(Microtek2_Info *mi, char *device)
         return status;
       }
 
+    printf("D\n");
+
     INQ_GET_INQLEN(inqlen, result);
     INQ_SET_ALLOC(cmd, inqlen + INQ_ALLOC_L);
     result = alloca(inqlen + INQ_ALLOC_L);
@@ -4328,6 +4337,8 @@ scsi_inquiry(Microtek2_Info *mi, char *device)
     if (md_dump >= 2 )
         dump_area2(cmd, sizeof(cmd), "inquiry");
 
+    printf("E\n");
+
     status = sanei_scsi_cmd(sfd, cmd, sizeof(cmd), result, &size);
     if ( status != SANE_STATUS_GOOD )
       {
@@ -4337,12 +4348,16 @@ scsi_inquiry(Microtek2_Info *mi, char *device)
       }
     sanei_scsi_close(sfd);
 
+    printf("F\n");
+
     if (md_dump >= 2 )
       {
         dump_area2((uint8_t *) result, size, "inquiryresult");
         dump_area((uint8_t *) result, size, "inquiryresult");
       }
 
+    printf("G\n");
+
     /* copy results */
     INQ_GET_QUAL(mi->device_qualifier, result);
     INQ_GET_DEVT(mi->device_type, result);
@@ -4352,6 +4367,7 @@ scsi_inquiry(Microtek2_Info *mi, char *device)
     INQ_GET_REV(mi->revision, (char *)result);
     INQ_GET_MODELCODE(mi->model_code, result);
 
+    printf("H\n");
 
     return SANE_STATUS_GOOD;
 }