diff --git a/crates/cheatcodes/src/env.rs b/crates/cheatcodes/src/env.rs
index d9022b16d4c1..58460ff86333 100644
--- a/crates/cheatcodes/src/env.rs
+++ b/crates/cheatcodes/src/env.rs
@@ -33,7 +33,7 @@ impl Cheatcode for envBool_0Call {
 impl Cheatcode for envUint_0Call {
     fn apply(&self, _state: &mut Cheatcodes) -> Result {
         let Self { name } = self;
-        env::<U256>(name, None)
+        env::<U256>(name, None).map_err(|e| fmt_err!("Could not parse U256 environment variable {name}. Make sure it's a valid uint, or a 0x-prefixed hex string: {e}"))
     }
 }
 
diff --git a/testdata/cheats/Env.t.sol b/testdata/cheats/Env.t.sol
index 44e5f5db71fa..a9d3ef8b93e6 100644
--- a/testdata/cheats/Env.t.sol
+++ b/testdata/cheats/Env.t.sol
@@ -33,7 +33,7 @@ contract EnvTest is DSTest {
         string[numEnvUintTests] memory values = [
             "0",
             "115792089237316195423570985008687907853269984665640564039457584007913129639935",
-            "0x01",
+            "0x0a",
             "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80",
             "0x0000000000000000000000000000000000000000000000000000000000000000",
             "0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
@@ -41,7 +41,7 @@ contract EnvTest is DSTest {
         uint256[numEnvUintTests] memory expected = [
             type(uint256).min,
             type(uint256).max,
-            1,
+            10,
             77814517325470205911140941194401928579557062014761831930645393041380819009408,
             type(uint256).min,
             type(uint256).max