diff --git a/scripts/mk_util.py b/scripts/mk_util.py
index e2d024a60..888fb8553 100644
--- a/scripts/mk_util.py
+++ b/scripts/mk_util.py
@@ -1349,7 +1349,7 @@ class PythonInstallComponent(Component):
         return False    
     
     def install_deps(self, out):
-	if not is_python_install_enabled():
+        if not is_python_install_enabled():
             return
         pythonPkgDirWithoutPrefix = strip_path_prefix(PYTHON_PACKAGE_DIR, PREFIX)
         MakeRuleCmd.make_install_directory(out, pythonPkgDirWithoutPrefix)
diff --git a/src/api/api_fpa.cpp b/src/api/api_fpa.cpp
index 290f27ac5..d31d15a1b 100644
--- a/src/api/api_fpa.cpp
+++ b/src/api/api_fpa.cpp
@@ -441,8 +441,9 @@ extern "C" {
         LOG_Z3_mk_fpa_max(c, t1, t2);
         RESET_ERROR_CODE();
         api::context * ctx = mk_c(c);
-        Z3_ast r = of_ast(ctx->fpautil().mk_max(to_expr(t1), to_expr(t2)));
-        RETURN_Z3(r);
+        expr * a = ctx->fpautil().mk_max(to_expr(t1), to_expr(t2));
+        ctx->save_ast_trail(a);
+        RETURN_Z3(of_expr(a));
         Z3_CATCH_RETURN(0);
     }