diff --git a/librz/core/cmd/cmd_print.c b/librz/core/cmd/cmd_print.c
index d2aa7d13ccf..1ec363a54d2 100644
--- a/librz/core/cmd/cmd_print.c
+++ b/librz/core/cmd/cmd_print.c
@@ -7032,7 +7032,7 @@ RZ_IPI RzCmdStatus rz_cmd_print_raw_handler(RzCore *core, int argc, const char *
 }
 
 RZ_IPI RzCmdStatus rz_cmd_print_raw_colors_handler(RzCore *core, int argc, const char **argv) {
-	int len = argc > 1 ? rz_num_math(core->num, argv[1]) : strlen((const char *)core->block);
+	int len = argc > 1 ? rz_num_math(core->num, argv[1]) : core->blocksize;
 	if (len < 0) {
 		return RZ_CMD_STATUS_ERROR;
 	}