diff --git a/Libraries/LibRequests/CMakeLists.txt b/Libraries/LibRequests/CMakeLists.txt
index 65f71ca4230..835b0c233c8 100644
--- a/Libraries/LibRequests/CMakeLists.txt
+++ b/Libraries/LibRequests/CMakeLists.txt
@@ -12,3 +12,8 @@ set(GENERATED_SOURCES
 
 serenity_lib(LibRequests requests)
 target_link_libraries(LibRequests PRIVATE LibCore LibIPC)
+
+if (WIN32)
+    find_package(pthread REQUIRED)
+    target_include_directories(LibRequests PRIVATE ${PTHREAD_INCLUDE_DIR})
+endif()
diff --git a/Libraries/LibRequests/RequestClient.cpp b/Libraries/LibRequests/RequestClient.cpp
index 7df8af35d31..be6d43d3313 100644
--- a/Libraries/LibRequests/RequestClient.cpp
+++ b/Libraries/LibRequests/RequestClient.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <LibCore/System.h>
 #include <LibRequests/Request.h>
 #include <LibRequests/RequestClient.h>
 
@@ -19,7 +20,7 @@ RequestClient::~RequestClient() = default;
 void RequestClient::die()
 {
     // FIXME: Gracefully handle this, or relaunch and reconnect to RequestServer.
-    warnln("\033[31;1m {} Lost connection to RequestServer\033[0m", getpid());
+    warnln("\033[31;1m {} Lost connection to RequestServer\033[0m", Core::System::getpid());
 }
 
 void RequestClient::ensure_connection(URL::URL const& url, ::RequestServer::CacheLevel cache_level)