diff --git a/board/dongle.c b/board/dongle.c
index c2b6307..973a981 100644
--- a/board/dongle.c
+++ b/board/dongle.c
@@ -165,7 +165,7 @@ static HRESULT dongle_cmd(
             return dongle_cmd_taito_aic_read(dongle, req, resp);
         
         default: 
-            dprintf("DONGLE: Node %02x: Unhandled command byte @ %02X %02x\n",
+            dprintf("Dongle: Node %02x: Unhandled command byte @ %02X %02x\n",
                         dongle->addr,
                         (uint8_t)req->pos,
                         req->bytes[req->pos]);
@@ -188,7 +188,7 @@ static HRESULT dongle_cmd_reset(struct dongle *dongle, struct const_iobuf *req_b
         return hr;
     }
 
-    dprintf("DONGLE: Reset (param %02x)\n", req.unknown);
+    dprintf("Dongle: Reset (param %02x)\n", req.unknown);
     dongle->addr = 0xFF;
     dongle->jvs.sense_out = false;
 
@@ -213,7 +213,7 @@ static HRESULT dongle_cmd_assign_addr(
     }
 
     sense = jvs_node_sense(dongle->jvs.next);
-    dprintf("DONGLE: Assign addr %02x sense %i\n", req.addr, sense);
+    dprintf("Dongle: Assign addr %02x sense %i\n", req.addr, sense);
 
     if (sense) {
         /* That address is for somebody else */
@@ -237,7 +237,7 @@ static HRESULT dongle_cmd_read_id(struct dongle *dongle, struct const_iobuf *req
         return hr;
     }
 
-    dprintf("DONGLE: Read ID\n");
+    dprintf("Dongle: Read ID\n");
 
     /* Write report byte */
 
@@ -265,7 +265,7 @@ static HRESULT dongle_cmd_get_cmd_version(struct dongle *dongle, struct const_io
         return hr;
     }
 
-    dprintf("DONGLE: Get command format version\n");
+    dprintf("Dongle: Get command format version\n");
     resp[0] = 0x01; /* Report byte */
     resp[1] = 0x13; /* Command format version BCD */
 
@@ -284,7 +284,7 @@ static HRESULT dongle_cmd_get_jvs_version(struct dongle *dongle, struct const_io
         return hr;
     }
 
-    dprintf("DONGLE: Get JVS format version\n");
+    dprintf("Dongle: Get JVS format version\n");
     resp[0] = 0x01; /* Report byte */
     resp[1] = 0x30; /* JVS format version BCD */
 
@@ -303,7 +303,7 @@ static HRESULT dongle_cmd_get_comm_version(struct dongle *dongle, struct const_i
         return hr;
     }
 
-    dprintf("DONGLE: Get COMM format version\n");
+    dprintf("Dongle: Get COMM format version\n");
     resp[0] = 0x01; /* Report byte */
     resp[1] = 0x10; /* COMM format version BCD */
 
@@ -322,7 +322,7 @@ static HRESULT dongle_cmd_get_features(struct dongle *dongle, struct const_iobuf
         return hr;
     }
 
-    dprintf("DONGLE: Get reader features\n");
+    dprintf("Dongle: Get reader features\n");
 
     hr = iobuf_write_8(resp_buf, 0x01); /* Write report byte */
 
@@ -356,7 +356,7 @@ static HRESULT dongle_cmd_write_gpio1(struct dongle *dongle, struct const_iobuf
     }
 
     if (dongle->state != io_state[0]) {
-        dprintf("DONGLE: Update state %02X\n", io_state[0], num_io);
+        dprintf("Dongle: Update state %02X\n", io_state[0]);
     }
     
     dongle->state = io_state[0];
diff --git a/board/k92x0249.c b/board/k92x0249.c
index 92a77b2..ab3176e 100644
--- a/board/k92x0249.c
+++ b/board/k92x0249.c
@@ -356,7 +356,7 @@ static HRESULT k92x0249_cmd_write_gpio1(struct k92x0249 *k92x0249, struct const_
     }
 
     if (k92x0249->state != io_state[0]) {
-        dprintf("K92X0249: Update state %02X\n", io_state[0], num_io);
+        dprintf("K92X0249: Update state %02X\n", io_state[0]);
     }
     
     k92x0249->state = io_state[0];