diff --git a/compiler/rustc_target/src/spec/base/sbf_base.rs b/compiler/rustc_target/src/spec/base/sbf_base.rs
index 50ffc6c883fc7..818e6caabd09f 100644
--- a/compiler/rustc_target/src/spec/base/sbf_base.rs
+++ b/compiler/rustc_target/src/spec/base/sbf_base.rs
@@ -60,6 +60,7 @@ SECTIONS
         requires_lto: false,
         singlethread: true,
         vendor: "solana".into(),
+        c_enum_min_bits: Some(32),
         .. Default::default()
     }
 }