diff --git a/Libraries/LibWasm/AbstractMachine/AbstractMachine.h b/Libraries/LibWasm/AbstractMachine/AbstractMachine.h
index 7044004727..966aa0db0e 100644
--- a/Libraries/LibWasm/AbstractMachine/AbstractMachine.h
+++ b/Libraries/LibWasm/AbstractMachine/AbstractMachine.h
@@ -20,6 +20,7 @@
 namespace Wasm {
 
 class Configuration;
+class Result;
 struct Interpreter;
 
 struct InstantiationError {
diff --git a/Libraries/LibWasm/CMakeLists.txt b/Libraries/LibWasm/CMakeLists.txt
index caefd9636a..d120f3aee1 100644
--- a/Libraries/LibWasm/CMakeLists.txt
+++ b/Libraries/LibWasm/CMakeLists.txt
@@ -5,9 +5,12 @@ set(SOURCES
     AbstractMachine/Validator.cpp
     Parser/Parser.cpp
     Printer/Printer.cpp
-    WASI/Wasi.cpp
 )
 
+if (NOT WIN32)
+    list(APPEND SOURCES WASI/Wasi.cpp)
+endif()
+
 serenity_lib(LibWasm wasm)
 target_link_libraries(LibWasm PRIVATE LibCore LibGC LibJS)