diff --git a/src/detect/ScanI2CTwoWire.cpp b/src/detect/ScanI2CTwoWire.cpp
index e2ba78a92..22370ff4c 100644
--- a/src/detect/ScanI2CTwoWire.cpp
+++ b/src/detect/ScanI2CTwoWire.cpp
@@ -358,7 +358,7 @@ void ScanI2CTwoWire::scanPort(I2CPort port, uint8_t *address, uint8_t asize)
             case SHT31_4x_ADDR:     // same as OPT3001_ADDR_ALT
             case SHT31_4x_ADDR_ALT: // same as OPT3001_ADDR
                 registerValue = getRegisterValue(ScanI2CTwoWire::RegisterLocation(addr, 0x89), 2);
-                if (registerValue == 0x11a2 || registerValue == 0x11da || registerValue == 0xe9c) {
+                if (registerValue == 0x11a2 || registerValue == 0x11da || registerValue == 0xe9c || registerValue == 0xc8d) {
                     type = SHT4X;
                     logFoundDevice("SHT4X", (uint8_t)addr.address);
                 } else if (getRegisterValue(ScanI2CTwoWire::RegisterLocation(addr, 0x7E), 2) == 0x5449) {