diff --git a/bindings/wasm/lib.rs b/bindings/wasm/lib.rs
index 05f182f09..ffbe90928 100644
--- a/bindings/wasm/lib.rs
+++ b/bindings/wasm/lib.rs
@@ -288,8 +288,9 @@ impl limbo_core::IO for PlatformIO {
     }
 
     fn generate_random_number(&self) -> i64 {
-        let random_f64 = Math_random();
-        (random_f64 * i64::MAX as f64) as i64
+        let mut buf = [0u8; 8];
+        getrandom::getrandom(&mut buf).unwrap();
+        i64::from_ne_bytes(buf)
     }
 
     fn get_memory_io(&self) -> Arc<limbo_core::MemoryIO> {
@@ -297,11 +298,6 @@ impl limbo_core::IO for PlatformIO {
     }
 }
 
-#[wasm_bindgen]
-extern "C" {
-    fn Math_random() -> f64;
-}
-
 #[wasm_bindgen]
 extern "C" {
     type Date;