diff --git a/asciidoc.nanorc b/asciidoc.nanorc
index b16a74e..1f9d2cc 100644
--- a/asciidoc.nanorc
+++ b/asciidoc.nanorc
@@ -1,7 +1,7 @@
 syntax "AsciiDoc" "\.(asc|asciidoc|adoc)$"
 
 # main header
-color red "^====+$"
+color brightred "^=[[:space:]].+$"
 # h1
 color red "^==[[:space:]].*$"
 color red "^----+$"
@@ -24,7 +24,7 @@ color red "\+\+\+\{[a-z0-9]*\}\+\+\+"
 # Paragraph Title
 color yellow "^\..*$"
 
-# source 
+# source
 color magenta "^\[(source,.+|NOTE|TIP|IMPORTANT|WARNING|CAUTION)\]"
 
 # Other markup
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