diff --git a/libprocessgroup/cgroup_map.cpp b/libprocessgroup/cgroup_map.cpp
index c5fb80464..cd8ef94a7 100644
--- a/libprocessgroup/cgroup_map.cpp
+++ b/libprocessgroup/cgroup_map.cpp
@@ -131,7 +131,8 @@ static bool ReadDescriptors(std::map<std::string, CgroupDescriptor>* descriptors
         std::string name = cgroups[i]["Controller"].asString();
         descriptors->emplace(std::make_pair(
                 name,
-                CgroupDescriptor(1, name, cgroups[i]["Path"].asString(), cgroups[i]["Mode"].asInt(),
+                CgroupDescriptor(1, name, cgroups[i]["Path"].asString(),
+                                 std::strtoul(cgroups[i]["Mode"].asString().c_str(), 0, 8),
                                  cgroups[i]["UID"].asString(), cgroups[i]["GID"].asString())));
     }
 
@@ -139,8 +140,8 @@ static bool ReadDescriptors(std::map<std::string, CgroupDescriptor>* descriptors
     descriptors->emplace(std::make_pair(
             CGROUPV2_CONTROLLER_NAME,
             CgroupDescriptor(2, CGROUPV2_CONTROLLER_NAME, cgroups2["Path"].asString(),
-                             cgroups2["Mode"].asInt(), cgroups2["UID"].asString(),
-                             cgroups2["GID"].asString())));
+                             std::strtoul(cgroups2["Mode"].asString().c_str(), 0, 8),
+                             cgroups2["UID"].asString(), cgroups2["GID"].asString())));
 
     return true;
 }
diff --git a/rootdir/cgroups.json b/rootdir/cgroups.json
index 6eb88c957..aa7195609 100644
--- a/rootdir/cgroups.json
+++ b/rootdir/cgroups.json
@@ -3,40 +3,40 @@
     {
       "Controller": "cpu",
       "Path": "/dev/cpuctl",
-      "Mode": 0755,
+      "Mode": "0755",
       "UID": "system",
       "GID": "system"
     },
     {
       "Controller": "cpuacct",
       "Path": "/acct",
-      "Mode": 0555
+      "Mode": "0555"
     },
     {
       "Controller": "cpuset",
       "Path": "/dev/cpuset",
-      "Mode": 0755,
+      "Mode": "0755",
       "UID": "system",
       "GID": "system"
     },
     {
       "Controller": "memory",
       "Path": "/dev/memcg",
-      "Mode": 0700,
+      "Mode": "0700",
       "UID": "root",
       "GID": "system"
     },
     {
       "Controller": "schedtune",
       "Path": "/dev/stune",
-      "Mode": 0755,
+      "Mode": "0755",
       "UID": "system",
       "GID": "system"
     }
   ],
   "Cgroups2": {
     "Path": "/dev/cg2_bpf",
-    "Mode": 0600,
+    "Mode": "0600",
     "UID": "root",
     "GID": "root"
   }