diff --git a/agb-macros/src/lib.rs b/agb-macros/src/lib.rs
index b20b52f7..486e8e9a 100644
--- a/agb-macros/src/lib.rs
+++ b/agb-macros/src/lib.rs
@@ -77,7 +77,7 @@ pub fn entry(args: TokenStream, input: TokenStream) -> TokenStream {
         #[export_name = "main"]
         #(#attrs)*
         pub fn #fn_name() -> ! {
-            let #mutable #argument_name = #argument_type ::new();
+            let #mutable #argument_name = unsafe { #argument_type ::new_in_entry() };
 
             #(#stmts)*
         }
diff --git a/agb/src/lib.rs b/agb/src/lib.rs
index cdbc9959..f5cb0f62 100644
--- a/agb/src/lib.rs
+++ b/agb/src/lib.rs
@@ -210,8 +210,8 @@ pub struct Gba {
 
 impl Gba {
     #[doc(hidden)]
-    pub fn new() -> Self {
-        unsafe { GBASINGLE.take() }
+    pub unsafe fn new_in_entry() -> Self {
+        GBASINGLE.take()
     }
 
     const unsafe fn single_new() -> Self {
@@ -224,12 +224,6 @@ impl Gba {
     }
 }
 
-impl Default for Gba {
-    fn default() -> Self {
-        Self::new()
-    }
-}
-
 #[doc(hidden)]
 pub trait Testable {
     fn run(&self, gba: &mut Gba);