diff --git a/lib/ldap.c b/lib/ldap.c
index 27bccdc7c..3ea417f24 100644
--- a/lib/ldap.c
+++ b/lib/ldap.c
@@ -37,7 +37,7 @@
 #if defined(WIN32)
 # include <windows.h>
 # include <malloc.h>
-# include <WinLdap.h>
+# include <winldap.h>
 #endif
 
 #ifdef HAVE_UNISTD_H