diff --git a/doc/tint2.md b/doc/tint2.md
index daffef7..921bf74 100644
--- a/doc/tint2.md
+++ b/doc/tint2.md
@@ -656,7 +656,7 @@ execp_markup = 1
 
 ```
 execp = new
-execp_command = free | awk '/^-/ { printf "Mem: '$(free -h | awk '/^Mem:/ { print $2 }')' %.0f%\n", 100*$3/($3+$4); fflush(stdout) }'
+execp_command = free | awk '/^-/ { printf "Mem: '$(free -h | awk '/^Mem:/ { print $2 }')' %.0f%%\n", 100*$3/($3+$4); fflush(stdout) }'
 execp_interval = 5
 execp_continuous = 0
 ```