diff --git a/.config/picom/picom.conf b/.config/picom/picom.conf
index 0d6228b..5ebe3b0 100644
--- a/.config/picom/picom.conf
+++ b/.config/picom/picom.conf
@@ -222,8 +222,8 @@ backend = "glx"
 dithered-present = false;
 
 # Enable/disable VSync.
-vsync = false
-#vsync = true;
+#vsync = false
+vsync = true;
 
 # Try to detect WM windows (a non-override-redirect window with no
 # child that has 'WM_STATE') and mark them as active.
diff --git a/.zshrc b/.zshrc
index b5d6450..882333f 100644
--- a/.zshrc
+++ b/.zshrc
@@ -55,8 +55,6 @@ _fzf_comprun() {
     esac
 }
 
-eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
-
 export STARSHIP_CONFIG="$HOME/.config/starship/config.toml"
 # Check that the function `starship_zle-keymap-select()` is defined.
 # xref: https://github.com/starship/starship/issues/3418