diff --git a/syntax/awk.nanorc b/syntax/awk.nanorc
index 942d2f56..5e6c3197 100644
--- a/syntax/awk.nanorc
+++ b/syntax/awk.nanorc
@@ -31,7 +31,7 @@ color magenta "\<(bindtextdomain|dcgettext|dcngettext)\>"
 # Strings.
 color brightyellow "<[^= 	]*>" ""(\\.|[^"])*""
 # Comments.
-color brightblue "(^|[[:blank:]])#.*$"
+color brightblue "(^|[[:blank:]])#.*"
 
 # Trailing whitespace.
 color ,green "[[:space:]]+$"
diff --git a/syntax/po.nanorc b/syntax/po.nanorc
index 66cee17a..5c1746d3 100644
--- a/syntax/po.nanorc
+++ b/syntax/po.nanorc
@@ -7,7 +7,7 @@ syntax po "\.pot?$"
 comment "#"
 
 # Comments.
-color green "^#.*$"
+color green "^#.*"
 color yellow "Copyright|\(C\)"
 # Header fields.
 color brightred "^"X-Bugs:.*"$"
diff --git a/syntax/texinfo.nanorc b/syntax/texinfo.nanorc
index 5fdc1cad..266b7aa6 100644
--- a/syntax/texinfo.nanorc
+++ b/syntax/texinfo.nanorc
@@ -9,10 +9,10 @@ magic "Texinfo source"
 comment "@c "
 
 # Command arguments, trailing and enclosed.
-color cyan "^@[a-z]+[[:space:]]+.*$"
+color cyan "^@[a-z]+[[:space:]]+.*"
 color brightmagenta "@[a-zA-Z]+\{[^}]*\}"
 # Commands themselves.
-color yellow "@[a-zA-Z]+\{?" "\}"
+color yellow "@[a-zA-Z]+\{?|\}"
 
 # Menu items.
 color brightred "^\*[[:space:]]+.*::.*"