diff --git a/keymaster/4.0/support/Keymaster3.cpp b/keymaster/4.0/support/Keymaster3.cpp
index b2cdbd9263..84b3ee1f60 100644
--- a/keymaster/4.0/support/Keymaster3.cpp
+++ b/keymaster/4.0/support/Keymaster3.cpp
@@ -61,9 +61,12 @@ KeyParameter convert(const V3_0::KeyParameter& param) {
 }
 
 hidl_vec<V3_0::KeyParameter> convert(const hidl_vec<KeyParameter>& params) {
-    hidl_vec<V3_0::KeyParameter> converted(params.size());
-    for (size_t i = 0; i < params.size(); ++i) {
-        converted[i] = convert(params[i]);
+    std::vector<V3_0::KeyParameter> converted;
+    converted.reserve(params.size());
+    for (const auto& param : params) {
+        // Qualcomm's Keymaster3 implementation behaves oddly if Tag::USER_ID is provided. Filter it
+        // out.  Revert this change when b/73286437 is fixed.
+        if (param.tag != Tag::USER_ID) converted.push_back(convert(param));
     }
     return converted;
 }