diff --git a/reactos/lib/inflib/infpriv.h b/reactos/lib/inflib/infpriv.h
index ec6810f415b..df13c04b02c 100644
--- a/reactos/lib/inflib/infpriv.h
+++ b/reactos/lib/inflib/infpriv.h
@@ -88,8 +88,8 @@ extern PINFCACHESECTION InfpFindSection(PINFCACHE Cache,
                                         PCTSTR Section);
 
 extern INFSTATUS InfpBuildFileBuffer(PINFCACHE InfHandle,
-                                     char **Buffer,
-                                     unsigned long *BufferSize);
+                                     PCHAR *Buffer,
+                                     PULONG BufferSize);
 
 extern INFSTATUS InfpFindFirstLine(PINFCACHE InfHandle,
                                    PCTSTR Section,