diff --git a/src/codegen/derive_debug.rs b/src/codegen/impl_debug.rs
similarity index 100%
rename from src/codegen/derive_debug.rs
rename to src/codegen/impl_debug.rs
diff --git a/src/codegen/mod.rs b/src/codegen/mod.rs
index ad4f65f4cb..8a9a5df569 100644
--- a/src/codegen/mod.rs
+++ b/src/codegen/mod.rs
@@ -1,4 +1,4 @@
-mod derive_debug;
+mod impl_debug;
 mod error;
 mod helpers;
 pub mod struct_layout;
@@ -1914,7 +1914,7 @@ impl CodeGenerator for CompInfo {
         }
 
         if needs_debug_impl {
-            let impl_ = derive_debug::gen_debug_impl(
+            let impl_ = impl_debug::gen_debug_impl(
                 ctx,
                 self.fields(),
                 item,
diff --git a/src/lib.rs b/src/lib.rs
index 10bdc6f916..0eb6bbaec9 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -247,7 +247,7 @@ impl Builder {
             output_vector.push("--no-derive-debug".into());
         }
 
-        if !self.options.impl_debug {
+        if self.options.impl_debug {
             output_vector.push("--impl-debug".into());
         }