diff --git a/c-core/CMakeLists.txt b/c-core/CMakeLists.txt
index 1e05918..4b5c80f 100644
--- a/c-core/CMakeLists.txt
+++ b/c-core/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.20.2 FATAL_ERROR)
-project(deciphon VERSION 0.12.1 LANGUAGES C)
+project(deciphon VERSION 0.12.2 LANGUAGES C)
 
 include(cmake/warnings.cmake)
 include(cmake/sanitizers.cmake)
diff --git a/c-core/params.h b/c-core/params.h
index 5f7f922..3fde6a4 100644
--- a/c-core/params.h
+++ b/c-core/params.h
@@ -1,6 +1,7 @@
 #ifndef PARAMS_H
 #define PARAMS_H
 
+#include "compiler.h"
 #include <stdbool.h>
 
 struct params
@@ -10,7 +11,7 @@ struct params
   bool hmmer3_compat;
 };
 
-int params_setup(struct params *, int num_threads, bool multi_hits,
-                 bool hmmer3_compat);
+API int params_setup(struct params *, int num_threads, bool multi_hits,
+                     bool hmmer3_compat);
 
 #endif