diff --git a/comp_sci_fundamentals_and_history/recursive-functions-of-symbolic-expressions-and-their-computation-by-machine-Part I.pdf b/comp_sci_fundamentals_and_history/recursive-functions-of-symbolic-expressions-and-their-computation-by-machine-PartI.pdf similarity index 100% rename from comp_sci_fundamentals_and_history/recursive-functions-of-symbolic-expressions-and-their-computation-by-machine-Part I.pdf rename to comp_sci_fundamentals_and_history/recursive-functions-of-symbolic-expressions-and-their-computation-by-machine-PartI.pdf diff --git a/garbage_collection/a-unified-theory-of-garbage-collection b/garbage_collection/a-unified-theory-of-garbage-collection.pdf similarity index 100% rename from garbage_collection/a-unified-theory-of-garbage-collection rename to garbage_collection/a-unified-theory-of-garbage-collection.pdf diff --git a/garbage_collection/teaching-garbage-collection-without-implementing-compilers-or-interpreters b/garbage_collection/teaching-garbage-collection-without-implementing-compilers-or-interpreters.pdf similarity index 100% rename from garbage_collection/teaching-garbage-collection-without-implementing-compilers-or-interpreters rename to garbage_collection/teaching-garbage-collection-without-implementing-compilers-or-interpreters.pdf