diff --git a/tdeioslave/ConfigureChecks.cmake b/tdeioslave/ConfigureChecks.cmake
index b1da9eb93..e7d339e2f 100644
--- a/tdeioslave/ConfigureChecks.cmake
+++ b/tdeioslave/ConfigureChecks.cmake
@@ -26,11 +26,11 @@ if( WITH_SASL )
 endif( )
 
 # rpc/rpc.h, originally was shipped with glibc ...
-check_include_file( rpc/rpc.h HAVE_RPC_H )
 # ... but later might be not present (deprecated from 2.26)
-if( NOT HAVE_RPC_H )
-  pkg_search_module( TIRPC libtirpc )
-  if( NOT TIRPC_FOUND )
+pkg_search_module( TIRPC libtirpc )
+if( NOT TIRPC_FOUND )
+  check_include_file( rpc/rpc.h HAVE_RPC_H )
+  if( NOT HAVE_RPC_H )
     tde_message_fatal( "rpc/rpc.h is required, please check your glibc or libtirpc package" )
   endif( )
 endif( )