diff --git a/tools/qfcc/include/expr.h b/tools/qfcc/include/expr.h
index 5c1a5709d..b5c918df4 100644
--- a/tools/qfcc/include/expr.h
+++ b/tools/qfcc/include/expr.h
@@ -386,9 +386,9 @@ typedef struct expr_s {
 	expr_type   type;			///< the type of the result of this expression
 	int         printid;		///< avoid duplicate output when printing
 	unsigned    id;
-	unsigned    paren:1;		///< the expression is enclosed in ()
-	unsigned    implicit:1;		///< don't warn for implicit casts
-	unsigned    nodag:1;		///< prevent use of dags for this expression
+	bool        paren:1;		///< the expression is enclosed in ()
+	bool        implicit:1;		///< don't warn for implicit casts
+	bool        nodag:1;		///< prevent use of dags for this expression
 								///< propagates up
 	union {
 		ex_label_t  label;				///< label expression
diff --git a/tools/qfcc/source/expr.c b/tools/qfcc/source/expr.c
index 31061342f..df54681ff 100644
--- a/tools/qfcc/source/expr.c
+++ b/tools/qfcc/source/expr.c
@@ -637,7 +637,7 @@ paren_expr (const expr_t *e)
 {
 	auto paren = new_expr ();
 	*paren = *e;
-	paren->paren = 1;
+	paren->paren = true;
 	return paren;
 }
 
diff --git a/tools/qfcc/source/expr_type.c b/tools/qfcc/source/expr_type.c
index 263b2d76a..6eaf4978e 100644
--- a/tools/qfcc/source/expr_type.c
+++ b/tools/qfcc/source/expr_type.c
@@ -684,7 +684,7 @@ type_function (int op, const expr_t *params)
 	}
 	auto te = new_expr ();
 	te->type = ex_type;
-	te->nodag = 1;
+	te->nodag = true;
 	te->typ = (ex_type_t) {
 		.op = op,
 		.params = params,
diff --git a/tools/qfcc/source/glsl-parse.y b/tools/qfcc/source/glsl-parse.y
index 48a01eeaa..d64032426 100644
--- a/tools/qfcc/source/glsl-parse.y
+++ b/tools/qfcc/source/glsl-parse.y
@@ -374,7 +374,7 @@ primary_exprsssion
 			auto val = new_type_value (&type_bool, &data);
 			$$ = new_value_expr (val, false);
 		}
-	| '(' expression ')'	{ $$ = $2; ((expr_t *) $$)->paren = 1; }
+	| '(' expression ')'	{ $$ = paren_expr ($2); }
 	;
 
 postfix_expression