diff --git a/examples/host/cdc_msc_hid/src/hid_app.c b/examples/host/cdc_msc_hid/src/hid_app.c
index f0d42a08f..6bb3a2072 100644
--- a/examples/host/cdc_msc_hid/src/hid_app.c
+++ b/examples/host/cdc_msc_hid/src/hid_app.c
@@ -235,6 +235,7 @@ static void process_mouse_report(hid_mouse_report_t const * report)
 static void process_generic_report(uint8_t dev_addr, uint8_t instance, uint8_t const* report, uint16_t len)
 {
   (void) dev_addr;
+  (void) len;
 
   uint8_t const rpt_count = hid_info[instance].report_count;
   tuh_hid_report_info_t* rpt_info_arr = hid_info[instance].report_info;
diff --git a/examples/host/hid_controller/src/hid_app.c b/examples/host/hid_controller/src/hid_app.c
index bff830ca2..6ffe0b6d4 100644
--- a/examples/host/hid_controller/src/hid_app.c
+++ b/examples/host/hid_controller/src/hid_app.c
@@ -253,6 +253,7 @@ bool diff_report(sony_ds4_report_t const* rpt1, sony_ds4_report_t const* rpt2)
 
 void process_sony_ds4(uint8_t const* report, uint16_t len)
 {
+  (void)len;
   const char* dpad_str[] = { "N", "NE", "E", "SE", "S", "SW", "W", "NW", "none" };
 
   // previous report used to compare for changes
diff --git a/src/class/hid/hid_host.c b/src/class/hid/hid_host.c
index 115a8a4df..7639a8fc6 100644
--- a/src/class/hid/hid_host.c
+++ b/src/class/hid/hid_host.c
@@ -657,7 +657,9 @@ uint8_t tuh_hid_parse_report_descriptor(tuh_hid_report_info_t* report_info_arr,
     uint8_t const data8 = desc_report[0];
 
     TU_LOG(3, "tag = %d, type = %d, size = %d, data = ", tag, type, size);
-    for (uint32_t i = 0; i < size; i++) TU_LOG(3, "%02X ", desc_report[i]);
+    for (uint32_t i = 0; i < size; i++) {
+      TU_LOG(3, "%02X ", desc_report[i]);
+    }
     TU_LOG(3, "\r\n");
 
     switch (type) {