diff --git a/lib/platform_compat.h b/lib/platform_compat.h
index b44a4a6f..9efeb952 100644
--- a/lib/platform_compat.h
+++ b/lib/platform_compat.h
@@ -37,7 +37,7 @@ extern "C" {
     // POSIX functions missing on Windows
     #define strcasecmp _stricmp
     #define strncasecmp _strnicmp
-    #define getpid() ((int)GetCurrentProcessId())
+    #include <process.h>
 
     // memmem — not available on Windows
     #define memmem compat_memmem