diff --git a/http-service/src/main/java/net/runelite/http/service/config/ConfigService.java b/http-service/src/main/java/net/runelite/http/service/config/ConfigService.java
index 8a21014b51..395c46f64d 100644
--- a/http-service/src/main/java/net/runelite/http/service/config/ConfigService.java
+++ b/http-service/src/main/java/net/runelite/http/service/config/ConfigService.java
@@ -24,6 +24,7 @@
  */
 package net.runelite.http.service.config;
 
+import com.google.common.annotations.VisibleForTesting;
 import com.google.gson.Gson;
 import com.google.gson.JsonSyntaxException;
 import com.mongodb.client.MongoClient;
@@ -166,7 +167,8 @@ public class ConfigService
 		return true;
 	}
 
-	private static Object parseJsonString(String value)
+	@VisibleForTesting
+	static Object parseJsonString(String value)
 	{
 		Object jsonValue;
 		try
diff --git a/http-service/src/test/java/net/runelite/http/service/config/ConfigServiceTest.java b/http-service/src/test/java/net/runelite/http/service/config/ConfigServiceTest.java
new file mode 100644
index 0000000000..09e94c5d56
--- /dev/null
+++ b/http-service/src/test/java/net/runelite/http/service/config/ConfigServiceTest.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2019, Adam <Adam@sigterm.info>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.http.service.config;
+
+import com.google.common.collect.ImmutableMap;
+import static org.junit.Assert.assertEquals;
+import org.junit.Test;
+
+public class ConfigServiceTest
+{
+	@Test
+	public void testParseJsonString()
+	{
+		assertEquals(1, ConfigService.parseJsonString("1"));
+		assertEquals(3.14, ConfigService.parseJsonString("3.14"));
+		assertEquals(1L << 32, ConfigService.parseJsonString("4294967296"));
+		assertEquals("test", ConfigService.parseJsonString("test"));
+		assertEquals("test", ConfigService.parseJsonString("\"test\""));
+		assertEquals(ImmutableMap.of("key", "value"), ConfigService.parseJsonString("{\"key\": \"value\"}"));
+	}
+}
\ No newline at end of file