diff --git a/src/tint/fuzzers/tint_ast_fuzzer/mutation_finders/wrap_unary_operators.cc b/src/tint/fuzzers/tint_ast_fuzzer/mutation_finders/wrap_unary_operators.cc
index e12f44a..52cbc45 100644
--- a/src/tint/fuzzers/tint_ast_fuzzer/mutation_finders/wrap_unary_operators.cc
+++ b/src/tint/fuzzers/tint_ast_fuzzer/mutation_finders/wrap_unary_operators.cc
@@ -28,7 +28,7 @@
 namespace ast_fuzzer {
 
 namespace {
-const size_t kMaxExpressionSize = 100;
+const size_t kMaxExpressionSize = 50;
 }  // namespace
 
 MutationList MutationFinderWrapUnaryOperators::FindMutations(