diff --git a/src/intel/isl/isl_format.c b/src/intel/isl/isl_format.c
index 95d5e51b7f7..7b9800076f0 100644
--- a/src/intel/isl/isl_format.c
+++ b/src/intel/isl/isl_format.c
@@ -1318,7 +1318,7 @@ unpack_channel(union isl_color_value *value,
 void
 isl_color_value_unpack(union isl_color_value *value,
                        enum isl_format format,
-                       const uint32_t data_in[4])
+                       const uint32_t *data_in)
 {
    const struct isl_format_layout *fmtl = isl_format_get_layout(format);
    assert(fmtl->colorspace == ISL_COLORSPACE_LINEAR ||