diff --git a/dlls/winecoreaudio.drv/coreaudio.c b/dlls/winecoreaudio.drv/coreaudio.c
index e2bce64ea14..5cdb3a4f676 100644
--- a/dlls/winecoreaudio.drv/coreaudio.c
+++ b/dlls/winecoreaudio.drv/coreaudio.c
@@ -1796,7 +1796,7 @@ static NTSTATUS unix_set_event_handle(void *args)
     return STATUS_SUCCESS;
 }
 
-unixlib_entry_t __wine_unix_call_funcs[] =
+const unixlib_entry_t __wine_unix_call_funcs[] =
 {
     unix_process_attach,
     unix_not_implemented,
@@ -1834,6 +1834,8 @@ unixlib_entry_t __wine_unix_call_funcs[] =
     unix_not_implemented,
 };
 
+C_ASSERT(ARRAYSIZE(__wine_unix_call_funcs) == funcs_count);
+
 #ifdef _WIN64
 
 typedef UINT PTR32;
@@ -2249,7 +2251,7 @@ static NTSTATUS unix_wow64_get_prop_value(void *args)
     return STATUS_SUCCESS;
 }
 
-unixlib_entry_t __wine_unix_call_wow64_funcs[] =
+const unixlib_entry_t __wine_unix_call_wow64_funcs[] =
 {
     unix_process_attach,
     unix_not_implemented,
@@ -2287,4 +2289,6 @@ unixlib_entry_t __wine_unix_call_wow64_funcs[] =
     unix_not_implemented,
 };
 
+C_ASSERT(ARRAYSIZE(__wine_unix_call_wow64_funcs) == funcs_count);
+
 #endif /* _WIN64 */