diff --git a/configure b/configure
index 074edb6..af3b0f8 100755
--- a/configure
+++ b/configure
@@ -20495,7 +20495,7 @@
   fi
 done
 
-new_module_list=`echo $new_module_list | tr ' ' '\n' | sort | tr '\n' ' ' | $SED 's/ $//'`
+new_module_list=`(echo $new_module_list | tr ' ' '\n' | sort | tr '\n' ' '; echo '') | $SED 's/ $//'`
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $new_module_list." >&5
 $as_echo "$new_module_list." >&6; }
diff --git a/configure.d/config_modules_agent b/configure.d/config_modules_agent
index 76746fd..c18ac33 100644
--- a/configure.d/config_modules_agent
+++ b/configure.d/config_modules_agent
@@ -77,7 +77,7 @@
   fi
 done
 
-new_module_list=`echo $new_module_list | tr ' ' '\n' | sort | tr '\n' ' ' | $SED 's/ $//'`
+new_module_list=`(echo $new_module_list | tr ' ' '\n' | sort | tr '\n' ' '; echo '') | $SED 's/ $//'`
 
 AC_MSG_RESULT([$new_module_list.])