diff --git a/src/checker.cpp b/src/checker.cpp
index 01c232bff..1c9ac8d51 100644
--- a/src/checker.cpp
+++ b/src/checker.cpp
@@ -5187,8 +5187,6 @@ gb_internal void check_unchecked_bodies(Checker *c) {
 			if (pi->body == nullptr) {
 				continue;
 			}
-
-			debugf("unchecked: %.*s\n", LIT(e->token.string));
 			check_procedure_later(c, pi);
 		}
 	}
@@ -5219,11 +5217,12 @@ gb_internal void check_safety_all_procedures_for_unchecked(Checker *c) {
 		GB_ASSERT(pi->decl != nullptr);
 		Entity *e = pi->decl->entity;
 		auto proc_checked_state = pi->decl->proc_checked_state.load();
+		gb_unused(proc_checked_state);
 		if (e && ((e->flags & EntityFlag_ProcBodyChecked) == 0)) {
 			if ((e->flags & EntityFlag_Used) != 0) {
-				debugf("%.*s :: %s\n", LIT(e->token.string), type_to_string(e->type));
-				debugf("proc body unchecked\n");
-				debugf("Checked State: %s\n\n", ProcCheckedState_strings[proc_checked_state]);
+				// debugf("%.*s :: %s\n", LIT(e->token.string), type_to_string(e->type));
+				// debugf("proc body unchecked\n");
+				// debugf("Checked State: %s\n\n", ProcCheckedState_strings[proc_checked_state]);
 
 				consume_proc_info(c, pi, &untyped);
 			}
diff --git a/src/llvm_backend.cpp b/src/llvm_backend.cpp
index 0df32329b..b3364b89e 100644
--- a/src/llvm_backend.cpp
+++ b/src/llvm_backend.cpp
@@ -1283,7 +1283,7 @@ gb_internal WORKER_TASK_PROC(lb_llvm_emit_worker_proc) {
 		gb_printf_err("LLVM Error: %s\n", llvm_error);
 		gb_exit(1);
 	}
-
+	debugf("Generated File: %.*s\n", LIT(wd->filepath_obj));
 	return 0;
 }
 
@@ -1659,6 +1659,7 @@ gb_internal bool lb_llvm_object_generation(lbGenerator *gen, bool do_threading)
 				gb_exit(1);
 				return false;
 			}
+			debugf("Generated File: %.*s\n", LIT(filepath_obj));
 		}
 	}
 	return true;
diff --git a/src/main.cpp b/src/main.cpp
index 60f27a5a7..de7fea344 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -27,13 +27,17 @@ gb_internal void thread_pool_wait(void) {
 }
 
 
+gb_global BlockingMutex debugf_mutex;
+
 gb_internal void debugf(char const *fmt, ...) {
 	if (build_context.show_debug_messages) {
+		mutex_lock(&debugf_mutex);
 		gb_printf_err("[DEBUG] ");
 		va_list va;
 		va_start(va, fmt);
 		(void)gb_printf_err_va(fmt, va);
 		va_end(va);
+		mutex_unlock(&debugf_mutex);
 	}
 }