diff --git a/src/platform/ESP32/ESP32FactoryDataProvider.cpp b/src/platform/ESP32/ESP32FactoryDataProvider.cpp
index f1ea995f5a900b..adeb155e4d382b 100644
--- a/src/platform/ESP32/ESP32FactoryDataProvider.cpp
+++ b/src/platform/ESP32/ESP32FactoryDataProvider.cpp
@@ -136,7 +136,7 @@ CHIP_ERROR ESP32FactoryDataProvider::SignWithDeviceAttestationKey(const ByteSpan
     Crypto::P256Keypair keypair;
 
     VerifyOrReturnError(IsSpanUsable(outSignBuffer), CHIP_ERROR_INVALID_ARGUMENT);
-    VerifyOrReturnError(IsSpanUsable(digestToSign), CHIP_ERROR_INVALID_ARGUMENT);
+    VerifyOrReturnError(IsSpanUsable(messageToSign), CHIP_ERROR_INVALID_ARGUMENT);
     VerifyOrReturnError(outSignBuffer.size() >= signature.Capacity(), CHIP_ERROR_BUFFER_TOO_SMALL);
 
     uint8_t privKeyBuf[kDACPrivateKeySize];