diff --git a/src/c/unixint.d b/src/c/unixint.d
index 01a7866c0..1ec09ae1f 100644
--- a/src/c/unixint.d
+++ b/src/c/unixint.d
@@ -113,7 +113,7 @@ handle_signal(int sig)
 		FEerror("Segmentation violation.", 0);
 		break;
 	default:
-		FEerror("Serious signal ~D caught.", 0, MAKE_FIXNUM(sig));
+		FEerror("Serious signal ~D caught.", 1, MAKE_FIXNUM(sig));
 	}
 }