diff --git a/runtime/vm/native_arguments.h b/runtime/vm/native_arguments.h
index 43aa0967b63..a083201f01d 100644
--- a/runtime/vm/native_arguments.h
+++ b/runtime/vm/native_arguments.h
@@ -151,7 +151,6 @@ class NativeArguments {
 
   static intptr_t ParameterCountForResolution(const Function& function) {
     ASSERT(function.is_native());
-    ASSERT(!function.IsGeneric());                // Not supported.
     ASSERT(!function.IsGenerativeConstructor());  // Not supported.
     intptr_t count = function.NumParameters();
     if (function.is_static() && function.IsClosureFunction()) {
@@ -166,7 +165,6 @@ class NativeArguments {
 
   static int ComputeArgcTag(const Function& function) {
     ASSERT(function.is_native());
-    ASSERT(!function.IsGeneric());                // Not supported.
     ASSERT(!function.IsGenerativeConstructor());  // Not supported.
     int tag = ArgcBits::encode(function.NumParameters());
     int function_bits = 0;