diff --git a/winsup/utils/ldd.cc b/winsup/utils/ldd.cc
index 183e02cd4..cc1349655 100644
--- a/winsup/utils/ldd.cc
+++ b/winsup/utils/ldd.cc
@@ -38,6 +38,7 @@
 #include <libgen.h>
 
 #define _WIN32_WINNT 0x0a00
+#define PSAPI_VERSION 1
 #include <windows.h>
 #include <winternl.h>
 #include <imagehlp.h>