diff --git a/test/pid_json_unittest.cpp b/test/pid_json_unittest.cpp
index 9d33789..2bd7d35 100644
--- a/test/pid_json_unittest.cpp
+++ b/test/pid_json_unittest.cpp
@@ -115,3 +115,88 @@
 
     EXPECT_DOUBLE_EQ(zoneConfig[1].minThermalOutput, 3000.0);
 }
+
+TEST(ZoneFromJson, oneZoneOneStepwiseWithHysteresis)
+{
+    // Parse a valid configuration with one zone and one PID and the PID uses
+    // Hysteresis parameters.
+
+    std::map<int64_t, conf::PIDConf> pidConfig;
+    std::map<int64_t, struct conf::ZoneConfig> zoneConfig;
+
+    auto j2 = R"(
+      {
+        "zones" : [{
+          "id": 1,
+          "minThermalOutput": 3000.0,
+          "failsafePercent": 75.0,
+          "pids": [{
+            "name": "temp1",
+            "type": "stepwise",
+            "inputs": ["temp1"],
+            "setpoint": 30.0,
+            "pid": {
+              "samplePeriod": 0.1,
+              "positiveHysteresis": 1.0,
+              "negativeHysteresis": 1.0,
+              "isCeiling": false,
+              "reading": {
+                "0": 45,
+                "1": 46,
+                "2": 47,
+                "3": 48,
+                "4": 49,
+                "5": 50,
+                "6": 51,
+                "7": 52,
+                "8": 53,
+                "9": 54,
+                "10": 55,
+                "11": 56,
+                "12": 57,
+                "13": 58,
+                "14": 59,
+                "15": 60,
+                "16": 61,
+                "17": 62,
+                "18": 63,
+                "19": 64
+              },
+              "output": {
+                "0": 5000,
+                "1": 2400,
+                "2": 2600,
+                "3": 2800,
+                "4": 3000,
+                "5": 3200,
+                "6": 3400,
+                "7": 3600,
+                "8": 3800,
+                "9": 4000,
+                "10": 4200,
+                "11": 4400,
+                "12": 4600,
+                "13": 4800,
+                "14": 5000,
+                "15": 5200,
+                "16": 5400,
+                "17": 5600,
+                "18": 5800,
+                "19": 6000
+              }
+            }
+          }]
+        }]
+      }
+    )"_json;
+
+    std::tie(pidConfig, zoneConfig) = buildPIDsFromJson(j2);
+    EXPECT_EQ(pidConfig.size(), 1);
+    EXPECT_EQ(zoneConfig.size(), 1);
+
+    EXPECT_EQ(pidConfig[1]["temp1"].type, "stepwise");
+    EXPECT_DOUBLE_EQ(pidConfig[1]["temp1"].stepwiseInfo.positiveHysteresis,
+                     1.0);
+
+    EXPECT_DOUBLE_EQ(zoneConfig[1].minThermalOutput, 3000.0);
+}
\ No newline at end of file