diff --git a/hcl.nanorc b/hcl.nanorc
index f02308b..da3917f 100644
--- a/hcl.nanorc
+++ b/hcl.nanorc
@@ -17,9 +17,9 @@ color green ":[[:space:]]*\"#[0-9abcdefABCDEF]+\""
 # Escapes.
 color green "\\\\" "\\\"" "\\[bfnrt]" "\\u[0-9abcdefABCDEF]{4})"
 # Special words.
-color green "(true|false|null|output|path|vault|description|default|value)"
+color green "\<(true|false|null|output|path|vault|description|default|value)\>"
 
-color brightgreen "(variable|terraform|resource|provider|module)"
+color brightgreen "\<(variable|terraform|resource|provider|module)\>"
 
 # Names (very unlikely to contain a quote).
 color brightblue "\"[^"]+\"[[:space:]]*:"