diff --git a/libwvdrmengine/cdm/core/src/initialization_data.cpp b/libwvdrmengine/cdm/core/src/initialization_data.cpp
index 0fad7675..e8827f56 100644
--- a/libwvdrmengine/cdm/core/src/initialization_data.cpp
+++ b/libwvdrmengine/cdm/core/src/initialization_data.cpp
@@ -66,7 +66,7 @@ InitializationData::InitializationData(const std::string& type,
     is_hls_ = true;
   }
 
-  if (is_supported()) {
+  if (data.size() && is_supported()) {
     if (is_cenc()) {
       bool oec_prefers_entitlements = DetectEntitlementPreference(oec_version);
       if (!SelectWidevinePssh(data, oec_prefers_entitlements, &data_)) {