diff --git a/src/nspawn/nspawn-oci.c b/src/nspawn/nspawn-oci.c
index dfa5c833c5..826981c3f7 100644
--- a/src/nspawn/nspawn-oci.c
+++ b/src/nspawn/nspawn-oci.c
@@ -1424,7 +1424,7 @@ static int oci_cgroup_block_io_weight_device(const char *name, JsonVariant *v, J
                 static const JsonDispatch table[] =  {
                         { "major",      JSON_VARIANT_UNSIGNED, oci_device_major,       offsetof(struct device_data, major),  JSON_MANDATORY  },
                         { "minor",      JSON_VARIANT_UNSIGNED, oci_device_minor,       offsetof(struct device_data, minor),  JSON_MANDATORY  },
-                        { "weight",     JSON_VARIANT_UNSIGNED, json_dispatch_unsigned, offsetof(struct device_data, weight), 0               },
+                        { "weight",     JSON_VARIANT_UNSIGNED, json_dispatch_uintmax,  offsetof(struct device_data, weight), 0               },
                         { "leafWeight", JSON_VARIANT_INTEGER,  oci_unsupported,        0,                                    JSON_PERMISSIVE },
                         {}
                 };
@@ -1484,7 +1484,7 @@ static int oci_cgroup_block_io_throttle(const char *name, JsonVariant *v, JsonDi
                 static const JsonDispatch table[] = {
                         { "major", JSON_VARIANT_UNSIGNED, oci_device_major,       offsetof(struct device_data, major), JSON_MANDATORY },
                         { "minor", JSON_VARIANT_UNSIGNED, oci_device_minor,       offsetof(struct device_data, minor), JSON_MANDATORY },
-                        { "rate",  JSON_VARIANT_UNSIGNED, json_dispatch_unsigned, offsetof(struct device_data, rate),  JSON_MANDATORY },
+                        { "rate",  JSON_VARIANT_UNSIGNED, json_dispatch_uintmax,  offsetof(struct device_data, rate),  JSON_MANDATORY },
                         {}
                 };
 
diff --git a/src/shared/json.c b/src/shared/json.c
index cc79375410..d391eb01cc 100644
--- a/src/shared/json.c
+++ b/src/shared/json.c
@@ -4063,7 +4063,7 @@ int json_dispatch_tristate(const char *name, JsonVariant *variant, JsonDispatchF
         return 0;
 }
 
-int json_dispatch_integer(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
+int json_dispatch_intmax(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
         intmax_t *i = userdata;
 
         assert(variant);
@@ -4076,7 +4076,7 @@ int json_dispatch_integer(const char *name, JsonVariant *variant, JsonDispatchFl
         return 0;
 }
 
-int json_dispatch_unsigned(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
+int json_dispatch_uintmax(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
         uintmax_t *u = userdata;
 
         assert(variant);
diff --git a/src/shared/json.h b/src/shared/json.h
index d429066761..d14740db88 100644
--- a/src/shared/json.h
+++ b/src/shared/json.h
@@ -293,8 +293,8 @@ int json_dispatch_strv(const char *name, JsonVariant *variant, JsonDispatchFlags
 int json_dispatch_boolean(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata);
 int json_dispatch_tristate(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata);
 int json_dispatch_variant(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata);
-int json_dispatch_integer(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata);
-int json_dispatch_unsigned(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata);
+int json_dispatch_intmax(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata);
+int json_dispatch_uintmax(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata);
 int json_dispatch_uint32(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata);
 int json_dispatch_int32(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata);
 int json_dispatch_uid_gid(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata);
@@ -303,10 +303,10 @@ int json_dispatch_id128(const char *name, JsonVariant *variant, JsonDispatchFlag
 int json_dispatch_unsupported(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata);
 
 assert_cc(sizeof(uintmax_t) == sizeof(uint64_t));
-#define json_dispatch_uint64 json_dispatch_unsigned
+#define json_dispatch_uint64 json_dispatch_uintmax
 
 assert_cc(sizeof(intmax_t) == sizeof(int64_t));
-#define json_dispatch_int64 json_dispatch_integer
+#define json_dispatch_int64 json_dispatch_intmax
 
 assert_cc(sizeof(uint32_t) == sizeof(unsigned));
 #define json_dispatch_uint json_dispatch_uint32