diff --git a/server/process.c b/server/process.c
index 055f1ef..066b232 100644
--- a/server/process.c
+++ b/server/process.c
@@ -493,7 +493,7 @@
 
 /* add a dll to a process list */
 static struct process_dll *process_load_dll( struct process *process, struct file *file,
-                                             void *base, const char *filename, size_t name_len )
+                                             void *base, const WCHAR *filename, size_t name_len )
 {
     struct process_dll *dll;