diff --git a/vimrc b/vimrc
index ce6513b..fe58551 100644
--- a/vimrc
+++ b/vimrc
@@ -200,7 +200,8 @@ Pack 'jrozner/vim-antlr'
 
 " Plugins for remote integrations
 Pack 'greymd/oscyank.vim', {'type': 'opt'}
-let g:use_osc52 = trim(system('tmux show-options -g set-clipboard')) ==# 'set-clipboard on'
+let g:use_osc52 = $TMUX !=# '' &&
+\ trim(system('tmux show-options -g set-clipboard')) ==# 'set-clipboard on'
 if g:use_osc52
   packadd oscyank.vim
 endif