diff --git a/src/main/blackbox/blackbox.c b/src/main/blackbox/blackbox.c
index 9d42a5443..bbf149ce3 100644
--- a/src/main/blackbox/blackbox.c
+++ b/src/main/blackbox/blackbox.c
@@ -1701,7 +1701,7 @@ void blackboxInit(void)
     // by default p_denom is 32 and a P-frame is written every 1ms
     // if p_denom is zero then no P-frames are logged
     if (blackboxConfig()->p_denom == 0) {
-        blackboxPInterval = 0;
+        blackboxPInterval = 0; // blackboxPInterval not used when p_denom is zero, so just set it to zero
     } else if (blackboxConfig()->p_denom > blackboxIInterval && blackboxIInterval >= 32) {
         blackboxPInterval = 1;
     } else {
diff --git a/src/main/fc/settings.c b/src/main/fc/settings.c
index 280319f8a..9fbdc1073 100644
--- a/src/main/fc/settings.c
+++ b/src/main/fc/settings.c
@@ -392,7 +392,7 @@ const clivalue_t valueTable[] = {
 
 // PG_BLACKBOX_CONFIG
 #ifdef BLACKBOX
-    { "blackbox_p_denom",           VAR_UINT16 | MASTER_VALUE, .config.minmax = { 0, INT16_MAX }, PG_BLACKBOX_CONFIG, offsetof(blackboxConfig_t, p_denom) },
+    { "blackbox_p_ratio",           VAR_UINT16 | MASTER_VALUE, .config.minmax = { 0, INT16_MAX }, PG_BLACKBOX_CONFIG, offsetof(blackboxConfig_t, p_denom) },
     { "blackbox_device",            VAR_UINT8  | MASTER_VALUE | MODE_LOOKUP, .config.lookup = { TABLE_BLACKBOX_DEVICE }, PG_BLACKBOX_CONFIG, offsetof(blackboxConfig_t, device) },
     { "blackbox_on_motor_test",     VAR_UINT8  | MASTER_VALUE | MODE_LOOKUP, .config.lookup = { TABLE_OFF_ON }, PG_BLACKBOX_CONFIG, offsetof(blackboxConfig_t, on_motor_test) },
     { "blackbox_record_acc",        VAR_UINT8  | MASTER_VALUE | MODE_LOOKUP, .config.lookup = { TABLE_OFF_ON }, PG_BLACKBOX_CONFIG, offsetof(blackboxConfig_t, record_acc) },