diff --git a/js/src/frontend/BytecodeEmitter.cpp b/js/src/frontend/BytecodeEmitter.cpp
index 87e4d1b90b..d7fc86a912 100644
--- a/js/src/frontend/BytecodeEmitter.cpp
+++ b/js/src/frontend/BytecodeEmitter.cpp
@@ -8896,6 +8896,10 @@ BytecodeEmitter::emitYieldStar(ParseNode* iter)
         return false;
     if (!emitAtomOp(cx->names().value, JSOP_GETPROP))     // ITER OLDRESULT FTYPE FVALUE VALUE
         return false;
+    if (isAsyncGenerator) {
+        if (!emitAwait())                                 // ITER OLDRESULT FTYPE FVALUE VALUE
+            return false;
+    }
     if (!emitPrepareIteratorResult())                     // ITER OLDRESULT FTYPE FVALUE VALUE RESULT
         return false;
     if (!emit1(JSOP_SWAP))                                // ITER OLDRESULT FTYPE FVALUE RESULT VALUE
@@ -8988,6 +8992,11 @@ BytecodeEmitter::emitYieldStar(ParseNode* iter)
     if (!emitAtomOp(cx->names().value, JSOP_GETPROP))            // VALUE
         return false;
 
+    if (isAsyncGenerator) {
+        if (!emitAwait())                                        // VALUE
+            return false;
+    }
+
     MOZ_ASSERT(this->stackDepth == startDepth - 1);
 
     return true;