diff --git a/platforms/nuttx/src/px4/common/SerialImpl.cpp b/platforms/nuttx/src/px4/common/SerialImpl.cpp
index 7fc5ea7520a2..4264976f4471 100644
--- a/platforms/nuttx/src/px4/common/SerialImpl.cpp
+++ b/platforms/nuttx/src/px4/common/SerialImpl.cpp
@@ -97,12 +97,36 @@ bool SerialImpl::configure()
 
 	case 460800: speed = B460800; break;
 
+#ifndef B500000
+#define B500000 500000
+#endif
+
+	case 500000: speed = B500000; break;
+
+#ifndef B576000
+#define B576000 576000
+#endif
+
+	case 576000: speed = B576000; break;
+
 #ifndef B921600
 #define B921600 921600
 #endif
 
 	case 921600: speed = B921600; break;
 
+#ifndef B1000000
+#define B1000000 1000000
+#endif
+
+	case 1000000: speed = B1000000; break;
+
+#ifndef B1500000
+#define B1500000 1500000
+#endif
+
+	case 1500000: speed = B1500000; break;
+
 	default:
 		speed = _baudrate;
 		PX4_WARN("Using non-standard baudrate: %lu", _baudrate);
diff --git a/platforms/posix/src/px4/common/SerialImpl.cpp b/platforms/posix/src/px4/common/SerialImpl.cpp
index 822ed4255ec0..2298c3829263 100644
--- a/platforms/posix/src/px4/common/SerialImpl.cpp
+++ b/platforms/posix/src/px4/common/SerialImpl.cpp
@@ -90,12 +90,36 @@ bool SerialImpl::configure()
 
 	case 460800: speed = B460800; break;
 
+#ifndef B500000
+#define B500000 500000
+#endif
+
+	case 500000: speed = B500000; break;
+
+#ifndef B576000
+#define B576000 576000
+#endif
+
+	case 576000: speed = B576000; break;
+
 #ifndef B921600
 #define B921600 921600
 #endif
 
 	case 921600: speed = B921600; break;
 
+#ifndef B1000000
+#define B1000000 1000000
+#endif
+
+	case 1000000: speed = B1000000; break;
+
+#ifndef B1500000
+#define B1500000 1500000
+#endif
+
+	case 1500000: speed = B1500000; break;
+
 	default:
 		speed = _baudrate;
 		PX4_WARN("Using non-standard baudrate: %u", _baudrate);