diff --git a/plugins/colored-man-pages/colored-man-pages.plugin.zsh b/plugins/colored-man-pages/colored-man-pages.plugin.zsh
index 981992d88..57facbb5c 100644
--- a/plugins/colored-man-pages/colored-man-pages.plugin.zsh
+++ b/plugins/colored-man-pages/colored-man-pages.plugin.zsh
@@ -36,6 +36,7 @@ function colored() {
   # Prefer `less` whenever available, since we specifically configured
   # environment for it.
   environment+=( PAGER="${commands[less]:-$PAGER}" )
+  environment+=( GROFF_NO_SGR=1 )
 
   # See ./nroff script.
   if [[ "$OSTYPE" = solaris* ]]; then