diff --git a/src/app/clusters/ota-requestor/BDXDownloader.cpp b/src/app/clusters/ota-requestor/BDXDownloader.cpp
index 155e96bcddbc01..378f2f77974dbb 100644
--- a/src/app/clusters/ota-requestor/BDXDownloader.cpp
+++ b/src/app/clusters/ota-requestor/BDXDownloader.cpp
@@ -60,7 +60,7 @@ System::Clock::Timeout BDXDownloader::GetTimeout()
 
 void BDXDownloader::Reset()
 {
-    prevPercentageComplete = 0;
+    mPrevPercentageComplete = 0;
     DeviceLayer::SystemLayer().StartTimer(mTimeout, TransferTimeoutCheckHandler, this);
 }
 
@@ -69,9 +69,9 @@ bool BDXDownloader::CheckTransferTimeout()
     uint8_t curPercentageComplete =
         mImageProcessor->GetPercentComplete().IsNull() ? 0 : mImageProcessor->GetPercentComplete().Value();
 
-    if (curPercentageComplete > prevPercentageComplete)
+    if (curPercentageComplete > mPrevPercentageComplete)
     {
-        prevPercentageComplete = curPercentageComplete;
+        mPrevPercentageComplete = curPercentageComplete;
         return false;
     }
     else
@@ -118,7 +118,7 @@ CHIP_ERROR BDXDownloader::BeginPrepareDownload()
     VerifyOrReturnError(mState == State::kIdle, CHIP_ERROR_INCORRECT_STATE);
     VerifyOrReturnError(mImageProcessor != nullptr, CHIP_ERROR_INCORRECT_STATE);
 
-    prevPercentageComplete = 0;
+    mPrevPercentageComplete = 0;
     DeviceLayer::SystemLayer().StartTimer(mTimeout, TransferTimeoutCheckHandler, this);
 
     ReturnErrorOnFailure(mImageProcessor->PrepareDownload());
diff --git a/src/app/clusters/ota-requestor/BDXDownloader.h b/src/app/clusters/ota-requestor/BDXDownloader.h
index 3852279c0f563d..8513542699de63 100644
--- a/src/app/clusters/ota-requestor/BDXDownloader.h
+++ b/src/app/clusters/ota-requestor/BDXDownloader.h
@@ -92,7 +92,7 @@ class BDXDownloader : public chip::OTADownloader
     // Timeout value in seconds to abort the download if there's no progress in the transfer session.
     System::Clock::Timeout mTimeout = System::Clock::kZero;
     // Tracks the percentage of transfer session complete from as of the previous check.
-    uint8_t prevPercentageComplete = 0;
+    uint8_t mPrevPercentageComplete = 0;
 };
 
 } // namespace chip