diff --git a/code/__pragmas.dm b/code/__pragmas.dm
index 39c14e1bbc95..aeb0175104b7 100644
--- a/code/__pragmas.dm
+++ b/code/__pragmas.dm
@@ -22,6 +22,7 @@
 #pragma InvalidOverride error
 #pragma DanglingVarType error
 #pragma MissingInterpolatedExpression error
+#pragma InvalidIndexOperation error
 
 //3000-3999
 #pragma EmptyBlock error