diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
index 5f455765b..926b29a43 100644
--- a/ConfigureChecks.cmake
+++ b/ConfigureChecks.cmake
@@ -108,7 +108,7 @@ if( BUILD_KCHECKPASS OR BUILD_TDM )
   if ( WITH_PAM )
     check_library_exists( pam pam_start "" HAVE_PAM )
     if( HAVE_PAM )
-      set( USEPAM 1 CACHE INTERNAL "" FORCE )
+      set( USE_PAM 1 CACHE INTERNAL "" FORCE )
       check_include_file( "security/pam_appl.h" SECURITY_PAM_APPL_H )
     endif( )
     if( HAVE_PAM AND SECURITY_PAM_APPL_H )