diff --git a/acc/src/code_generator.c b/acc/src/code_generator.c
index 5ba7ed5..b2eb8d3 100644
--- a/acc/src/code_generator.c
+++ b/acc/src/code_generator.c
@@ -506,11 +506,6 @@ traverse(const ASTNode* node)
         fprintf(CUDAHEADER, "%s", translate(node->postfix));
 }
 
-static void
-gen_preprocessed_forward_declarations(void)
-{
-}
-
 static void
 generate_preprocessed_structures(void)
 {
@@ -688,6 +683,27 @@ main(int argc, char** argv)
     assert(DSLHEADER);
     assert(CUDAHEADER);
 
+    // Add built-in params
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT, "AC_nx");
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT, "AC_ny");
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT, "AC_nz");
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT, "AC_mx");
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT, "AC_my");
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT, "AC_mz");
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT, "AC_nx_min");
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT, "AC_ny_min");
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT, "AC_nz_min");
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT, "AC_nx_max");
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT, "AC_ny_max");
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT, "AC_nz_max");
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT, "AC_mxy");
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT, "AC_nxy");
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT, "AC_nxyz");
+
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT3, "AC_global_grid_n");
+    add_symbol(SYMBOLTYPE_OTHER, UNIFORM, INT3, "AC_multigpu_offset");
+
+    // Generate
     traverse(root);
     generate_header();
     generate_preprocessed_structures();
diff --git a/include/astaroth_defines.h b/include/astaroth_defines.h
index 15ee0a2..d8a4027 100644
--- a/include/astaroth_defines.h
+++ b/include/astaroth_defines.h
@@ -71,26 +71,9 @@ typedef struct {
 #include "user_defines.h" // User-defined header
 
 // clang-format off
-#define AC_FOR_BUILTIN_INT_PARAM_TYPES(FUNC)\
-        FUNC(AC_nx), \
-        FUNC(AC_ny), \
-        FUNC(AC_nz), \
-        FUNC(AC_mx), \
-        FUNC(AC_my), \
-        FUNC(AC_mz), \
-        FUNC(AC_nx_min), \
-        FUNC(AC_ny_min), \
-        FUNC(AC_nz_min), \
-        FUNC(AC_nx_max), \
-        FUNC(AC_ny_max), \
-        FUNC(AC_nz_max), \
-        FUNC(AC_mxy),\
-        FUNC(AC_nxy),\
-        FUNC(AC_nxyz),\
+#define AC_FOR_BUILTIN_INT_PARAM_TYPES(FUNC)
 
-#define AC_FOR_BUILTIN_INT3_PARAM_TYPES(FUNC)\
-        FUNC(AC_global_grid_n),\
-        FUNC(AC_multigpu_offset),
+#define AC_FOR_BUILTIN_INT3_PARAM_TYPES(FUNC)
 
 #define AC_FOR_BUILTIN_REAL_PARAM_TYPES(FUNC)