diff --git a/Changelog b/Changelog
index 20814c1..966375d 100644
--- a/Changelog
+++ b/Changelog
@@ -66,6 +66,7 @@ Bug fixes:
 - use libtcc for static linking with runtime library (Thomas Preud'homme)
 - fix negation of 0.0 and -0.0 values (Thomas Preud'homme)
 - fix integer to double conversion on ARM (Thomas Preud'homme)
+- fix parameter passing of (unsigned) long long bitfield (Thomas Preud'homme)
 
 version 0.9.26:
 
diff --git a/tccgen.c b/tccgen.c
index c5e368e..03a446a 100644
--- a/tccgen.c
+++ b/tccgen.c
@@ -3490,6 +3490,9 @@ static void gfunc_param_typed(Sym *func, Sym *arg)
         if ((vtop->type.t & VT_BTYPE) == VT_FLOAT) {
             type.t = VT_DOUBLE;
             gen_cast(&type);
+        } else if (vtop->type.t & VT_BITFIELD) {
+            type.t = vtop->type.t & (VT_BTYPE | VT_UNSIGNED);
+            gen_cast(&type);
         }
     } else if (arg == NULL) {
         tcc_error("too many arguments to function");