diff --git a/tools/qfcc/source/dot_expr.c b/tools/qfcc/source/dot_expr.c
index 0ca173788..009bea2b8 100644
--- a/tools/qfcc/source/dot_expr.c
+++ b/tools/qfcc/source/dot_expr.c
@@ -380,7 +380,7 @@ print_value (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
 			label = va ("\\\"%s\\\"", quote_string (e->e.value->v.string_val));
 			break;
 		case ev_float:
-			label = va ("%g", e->e.value->v.float_val);
+			label = va ("f %g", e->e.value->v.float_val);
 			break;
 		case ev_vector:
 			label = va ("'%g %g %g'",