diff --git a/fuzz/fuzz_targets/ast.rs b/fuzz/fuzz_targets/ast.rs
index a089c46ba..80332223e 100644
--- a/fuzz/fuzz_targets/ast.rs
+++ b/fuzz/fuzz_targets/ast.rs
@@ -19,7 +19,8 @@ fn fuzz(ctx: Ctx) -> Result<()> {
     engine.set_max_array_size(500);
     engine.set_max_map_size(500);
     engine.set_max_variables(1000);
-    engine.set_max_modules(1000);
+    engine.set_max_functions(100);
+    engine.set_max_modules(100);
     engine.set_max_call_levels(10);
     engine.set_max_expr_depths(50, 5);
     engine.set_optimization_level(ctx.optimization_level);
diff --git a/fuzz/fuzz_targets/scripting.rs b/fuzz/fuzz_targets/scripting.rs
index 398bf18bf..710846406 100644
--- a/fuzz/fuzz_targets/scripting.rs
+++ b/fuzz/fuzz_targets/scripting.rs
@@ -22,7 +22,8 @@ fuzz_target!(|ctx: Ctx| {
     engine.set_max_array_size(500);
     engine.set_max_map_size(500);
     engine.set_max_variables(1000);
-    engine.set_max_modules(1000);
+    engine.set_max_functions(100);
+    engine.set_max_modules(100);
     engine.set_max_call_levels(10);
     engine.set_max_expr_depths(50, 5);
     engine.set_optimization_level(ctx.optimization_level);