diff --git a/tools/qfcc/include/def.h b/tools/qfcc/include/def.h
index 6ecb5aae8..6892b5d8a 100644
--- a/tools/qfcc/include/def.h
+++ b/tools/qfcc/include/def.h
@@ -221,6 +221,9 @@ void free_temp_def (def_t *temp);
 */
 void def_to_ddef (def_t *def, ddef_t *ddef, int aux);
 
+void init_vector_components (struct symbol_s *vector_sym, int is_field,
+							 struct symtab_s *symtab);
+
 /** Initialize a def referenced by the given symbol.
 
 	The symbol is checked for redefinition. A symbol is considered to be
diff --git a/tools/qfcc/source/def.c b/tools/qfcc/source/def.c
index 849723a44..29214b5c3 100644
--- a/tools/qfcc/source/def.c
+++ b/tools/qfcc/source/def.c
@@ -412,7 +412,7 @@ init_elements (struct def_s *def, expr_t *eles)
 	free_element_chain (&element_chain);
 }
 
-static void
+void
 init_vector_components (symbol_t *vector_sym, int is_field, symtab_t *symtab)
 {
 	expr_t     *vector_expr;
diff --git a/tools/qfcc/source/function.c b/tools/qfcc/source/function.c
index c2381d93b..0c1d8b680 100644
--- a/tools/qfcc/source/function.c
+++ b/tools/qfcc/source/function.c
@@ -542,6 +542,8 @@ create_param (symtab_t *parameters, symbol_t *param)
 	param->s.def = def;
 	param->sy_type = sy_var;
 	symtab_addsymbol (parameters, param);
+	if (is_vector(param->type) && options.code.vector_components)
+		init_vector_components (param, 0, parameters);
 }
 
 static void