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 68989ea4d8..be4b980593 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
@@ -199,6 +199,7 @@ public class ConfigManager
 				if (split.length != 2)
 				{
 					log.debug("Properties key malformed!: {}", groupAndKey);
+					properties.remove(groupAndKey);
 					return;
 				}