diff --git a/dlls/msi/storages.c b/dlls/msi/storages.c
index 144f8fd4859..5b555badcfa 100644
--- a/dlls/msi/storages.c
+++ b/dlls/msi/storages.c
@@ -69,7 +69,7 @@ static BOOL storages_set_table_size(MSISTORAGESVIEW *sv, UINT size)
     return TRUE;
 }
 
-static STORAGE *create_storage(MSISTORAGESVIEW *sv, LPWSTR name, IStorage *stg)
+static STORAGE *create_storage(MSISTORAGESVIEW *sv, LPCWSTR name, IStorage *stg)
 {
     STORAGE *storage;
 
diff --git a/dlls/msi/streams.c b/dlls/msi/streams.c
index fc660c82cd1..e4204a2addb 100644
--- a/dlls/msi/streams.c
+++ b/dlls/msi/streams.c
@@ -68,7 +68,7 @@ static BOOL streams_set_table_size(MSISTREAMSVIEW *sv, UINT size)
     return TRUE;
 }
 
-static STREAM *create_stream(MSISTREAMSVIEW *sv, LPWSTR name, BOOL encoded, IStream *stm)
+static STREAM *create_stream(MSISTREAMSVIEW *sv, LPCWSTR name, BOOL encoded, IStream *stm)
 {
     STREAM *stream;
     WCHAR decoded[MAX_STREAM_NAME_LEN];