diff --git a/filetests/arith.wast b/filetests/arith.wat similarity index 100% rename from filetests/arith.wast rename to filetests/arith.wat diff --git a/filetests/call.wast b/filetests/call.wat similarity index 100% rename from filetests/call.wast rename to filetests/call.wat diff --git a/filetests/fibonacci.wast b/filetests/fibonacci.wat similarity index 100% rename from filetests/fibonacci.wast rename to filetests/fibonacci.wat diff --git a/filetests/globals.wast b/filetests/globals.wat similarity index 100% rename from filetests/globals.wast rename to filetests/globals.wat diff --git a/filetests/memory.wast b/filetests/memory.wat similarity index 100% rename from filetests/memory.wast rename to filetests/memory.wat