diff --git a/libraries/networking/src/Assignment.cpp b/libraries/networking/src/Assignment.cpp
index e8ba67c4a6..6a89bd80c4 100644
--- a/libraries/networking/src/Assignment.cpp
+++ b/libraries/networking/src/Assignment.cpp
@@ -159,3 +159,10 @@ QDataStream& operator>>(QDataStream &in, Assignment& assignment) {
     
     return in;
 }
+
+
+uint qHash(const Assignment::Type& key, uint seed) {
+    // seems odd that Qt couldn't figure out this cast itself, but this fixes a compile error after switch to
+    // strongly typed enum for PacketType
+    return qHash((uint8_t) key, seed);
+}
diff --git a/libraries/networking/src/Assignment.h b/libraries/networking/src/Assignment.h
index 0fadc78770..fc2f8620a2 100644
--- a/libraries/networking/src/Assignment.h
+++ b/libraries/networking/src/Assignment.h
@@ -100,4 +100,6 @@ protected:
     QUuid _walletUUID; /// the UUID for the wallet that should be paid for this assignment
 };
 
+uint qHash(const Assignment::Type& key, uint seed);
+
 #endif // hifi_Assignment_h