diff --git a/include/xo/parser/parser.hpp b/include/xo/parser/parser.hpp
index 43f80d39..ba903311 100644
--- a/include/xo/parser/parser.hpp
+++ b/include/xo/parser/parser.hpp
@@ -242,7 +242,7 @@ namespace xo {
 
         private:
             expraction on_def(exprstatestack * p_stack);
-            expraction on_symbol(const token_type & tk);
+            expraction on_symbol(const token_type & tk, exprstatestack * p_stack);
             expraction on_colon();
             expraction on_singleassign();
             expraction on_f64(const token_type & tk);
diff --git a/src/parser/parser.cpp b/src/parser/parser.cpp
index 56f06f20..0bf2c8a6 100644
--- a/src/parser/parser.cpp
+++ b/src/parser/parser.cpp
@@ -313,7 +313,9 @@ namespace xo {
         }
 
         expraction
-        exprstate::on_symbol(const token_type & tk) {
+        exprstate::on_symbol(const token_type & tk,
+                             exprstatestack * /*p_stack*/)
+        {
             constexpr bool c_debug_flag = true;
             scope log(XO_DEBUG(c_debug_flag));
 
@@ -488,7 +490,7 @@ namespace xo {
                 return expraction();
 
             case tokentype::tk_symbol:
-                return this->on_symbol(tk);
+                return this->on_symbol(tk, p_stack);
 
             case tokentype::tk_leftparen: