diff --git a/src/compiler/glsl/glsl_parser.yy b/src/compiler/glsl/glsl_parser.yy
index 78a4e5df7cf..5ed051a6705 100644
--- a/src/compiler/glsl/glsl_parser.yy
+++ b/src/compiler/glsl/glsl_parser.yy
@@ -894,6 +894,7 @@ parameter_declarator:
       $$->type->set_location(@1);
       $$->type->specifier = $1;
       $$->identifier = $2;
+      state->symbols->add_variable(new(state) ir_variable(NULL, $2, ir_var_auto));
    }
    | type_specifier any_identifier array_specifier
    {
@@ -905,6 +906,7 @@ parameter_declarator:
       $$->type->specifier = $1;
       $$->identifier = $2;
       $$->array_specifier = $3;
+      state->symbols->add_variable(new(state) ir_variable(NULL, $2, ir_var_auto));
    }
    ;