diff --git a/dlls/advpack/files.c b/dlls/advpack/files.c
index 5e7691b4aef..de39bba7e29 100644
--- a/dlls/advpack/files.c
+++ b/dlls/advpack/files.c
@@ -165,14 +165,14 @@ HRESULT WINAPI AddDelBackupEntryW(LPCWSTR lpcszFileList, LPCWSTR lpcszBackupDir,
 /* FIXME: this is only for the local case, X:\ */
 #define ROOT_LENGTH 3
 
-UINT CALLBACK pQuietQueueCallback(PVOID Context, UINT Notification,
-                                  UINT_PTR Param1, UINT_PTR Param2)
+static UINT CALLBACK pQuietQueueCallback(PVOID Context, UINT Notification,
+                                         UINT_PTR Param1, UINT_PTR Param2)
 {
     return 1;
 }
 
-UINT CALLBACK pQueueCallback(PVOID Context, UINT Notification,
-                             UINT_PTR Param1, UINT_PTR Param2)
+static UINT CALLBACK pQueueCallback(PVOID Context, UINT Notification,
+                                    UINT_PTR Param1, UINT_PTR Param2)
 {
     /* only be verbose for error notifications */
     if (!Notification ||
diff --git a/dlls/advpack/install.c b/dlls/advpack/install.c
index 1662f1d61e4..d63a959c83d 100644
--- a/dlls/advpack/install.c
+++ b/dlls/advpack/install.c
@@ -425,8 +425,8 @@ static HRESULT get_working_dir(ADVInfo *info, LPCWSTR inf_filename, LPCWSTR work
 }
 
 /* loads the INF file and performs checks on it */
-HRESULT install_init(LPCWSTR inf_filename, LPCWSTR install_sec,
-                     LPCWSTR working_dir, DWORD flags, ADVInfo *info)
+static HRESULT install_init(LPCWSTR inf_filename, LPCWSTR install_sec,
+                            LPCWSTR working_dir, DWORD flags, ADVInfo *info)
 {
     DWORD len;
     HRESULT hr;
@@ -500,7 +500,7 @@ HRESULT install_init(LPCWSTR inf_filename, LPCWSTR install_sec,
 }
 
 /* release the install instance information */
-void install_release(ADVInfo *info)
+static void install_release(ADVInfo *info)
 {
     if (info->hinf && info->hinf != INVALID_HANDLE_VALUE)
         SetupCloseInfFile(info->hinf);