diff --git a/build_as_lib.py b/build_as_lib.py
index 910c58fe..4e8eea57 100644
--- a/build_as_lib.py
+++ b/build_as_lib.py
@@ -58,6 +58,11 @@ for item in menv.get("CPPDEFINES", []):
         example_name = item[1]
         src_filter.append(f"+<../examples/{example_name}>")
 
+    # EXCLUDE A SOURCE FILE FROM AN EXAMPLE (must be placed after example name or boom)
+    elif isinstance(item, tuple) and item[0] == "EXCLUDE_FROM_EXAMPLE":
+        exclude_name = item[1]
+        src_filter.append(f"-<../examples/{example_name}/{exclude_name}>")
+
 menv.Replace(SRC_FILTER=src_filter)
 
 #print (menv.Dump())