diff --git a/drm/mediadrm/plugins/clearkey/InitDataParser.cpp b/drm/mediadrm/plugins/clearkey/InitDataParser.cpp
index 0216b8d..6a4f8d5 100644
--- a/drm/mediadrm/plugins/clearkey/InitDataParser.cpp
+++ b/drm/mediadrm/plugins/clearkey/InitDataParser.cpp
@@ -114,7 +114,7 @@
     memcpy(&keyIdCount, &initData[readPosition], sizeof(keyIdCount));
     keyIdCount = ntohl(keyIdCount);
     readPosition += sizeof(keyIdCount);
-    if (readPosition + (keyIdCount * kKeyIdSize) !=
+    if (readPosition + ((uint64_t)keyIdCount * kKeyIdSize) !=
             initData.size() - sizeof(uint32_t)) {
         return android::ERROR_DRM_CANNOT_HANDLE;
     }