diff --git a/groff.nanorc b/groff.nanorc
index 508c4ab..95e0ee4 100644
--- a/groff.nanorc
+++ b/groff.nanorc
@@ -4,7 +4,7 @@ syntax "Groff" "\.m[ems]$" "\.rof" "\.tmac$" "^tmac."
 comment ".\""
 
 ## The argument of .ds or .nr
-color cyan "^\.(ds|nr) [^[[:space:]]]*"
+color cyan "^\.(ds|nr) [^[[:space:]]]*[^[[:space:]]]*"
 ## Single character escapes
 color brightmagenta "\\."
 ## Highlight the argument of \f or \s in the same color
@@ -13,7 +13,7 @@ color brightmagenta "\\f." "\\f\(.." "\\s(\+|\-)?[0-9]"
 color cyan "(\\|\\\\)n(.|\(..)"
 color cyan start="(\\|\\\\)n\[" end="]"
 ## Requests
-color brightgreen "^\.[[:space:]]*[^[[:space:]]]*"
+color brightgreen "^\.[[:space:]]*[^[[:space:]]]*[^[[:space:]]]*"
 ## Comments
 color yellow "^\.\\".*$"
 ## Strings