diff --git a/lib/smb.c b/lib/smb.c
index c2df43b70..45545628a 100644
--- a/lib/smb.c
+++ b/lib/smb.c
@@ -34,7 +34,7 @@
 #include <process.h>
 #ifdef CURL_WINDOWS_APP
 #define getpid GetCurrentProcessId
-#else
+#elif !defined(MSDOS)
 #define getpid _getpid
 #endif
 #endif