diff --git a/src/ast.rs b/src/ast.rs
index c964b214..9d7902d8 100644
--- a/src/ast.rs
+++ b/src/ast.rs
@@ -1549,6 +1549,7 @@ impl<F: Float> FloatWrapper<F> {
     }
 }
 
+#[cfg(not(feature = "no_float"))]
 impl FloatWrapper<FLOAT> {
     #[inline(always)]
     pub(crate) const fn const_new(value: FLOAT) -> Self {
diff --git a/tests/optimizer.rs b/tests/optimizer.rs
index 69c884fd..cd3baf58 100644
--- a/tests/optimizer.rs
+++ b/tests/optimizer.rs
@@ -48,6 +48,7 @@ fn test_optimizer_run() -> Result<(), Box<EvalAltResult>> {
     Ok(())
 }
 
+#[cfg(not(feature = "no_module"))]
 #[test]
 fn test_optimizer_parse() -> Result<(), Box<EvalAltResult>> {
     let mut engine = Engine::new();