diff --git a/runelite-client/src/main/scripts/ChatboxInputHandler.rs2asm b/runelite-client/src/main/scripts/ChatboxInputHandler.rs2asm
index f8003ab439..106f53218e 100644
--- a/runelite-client/src/main/scripts/ChatboxInputHandler.rs2asm
+++ b/runelite-client/src/main/scripts/ChatboxInputHandler.rs2asm
@@ -36,6 +36,18 @@
 .int_var_count      2
 .string_var_count   1
 
+; If we are not the active listener, the widget ids have probably changed
+   get_varc               5
+   load_int               -2
+   if_icmpeq              LABEL2
+
+; Log the error
+   load_string "Got input while not active; Widget ids in ChatboxInputInit are probably wrong."
+   load_string "debug"
+   runelite_callback
+   return
+
+LABEL2:
 ; Discard zero presses
    iload                  0
    load_int               0
diff --git a/runelite-client/src/main/scripts/ChatboxInputInit.rs2asm b/runelite-client/src/main/scripts/ChatboxInputInit.rs2asm
index 3a371df950..a29faa76c6 100644
--- a/runelite-client/src/main/scripts/ChatboxInputInit.rs2asm
+++ b/runelite-client/src/main/scripts/ChatboxInputInit.rs2asm
@@ -46,6 +46,10 @@
    sload                  1
    put_varc_string        22
 
+; Mark varcstring22 for our use
+   load_int               -2
+   put_varc               5
+
 ; Set text
    sload                  0
    load_int               10616876