diff --git a/runelite-client/src/main/java/net/runelite/client/config/ConfigManager.java b/runelite-client/src/main/java/net/runelite/client/config/ConfigManager.java
index 8c8c2ec704..60b9e1b7fd 100644
--- a/runelite-client/src/main/java/net/runelite/client/config/ConfigManager.java
+++ b/runelite-client/src/main/java/net/runelite/client/config/ConfigManager.java
@@ -753,6 +753,11 @@ public class ConfigManager
 				}
 
 				String current = getConfiguration(group.value(), item.keyName());
+				if (defaultValue == null)
+				{
+					log.error("Plugin with bad default configuration, see config group {}, keyName {}", group.value(), item.keyName());
+					continue;
+				}
 				String valueString = objectToString(defaultValue);
 				// null and the empty string are treated identically in sendConfig and treated as an unset
 				// If a config value defaults to "" and the current value is null, it will cause an extra
@@ -884,4 +889,4 @@ public class ConfigManager
 	{
 		return consumers.getOrDefault(configGroup + "." + keyName, (p) -> log.error("Failed to retrieve consumer with name {}.{}", configGroup, keyName));
 	}
-}
\ No newline at end of file
+}