diff --git a/syntax/c.nanorc b/syntax/c.nanorc
index bc1361e0..bb149bc1 100644
--- a/syntax/c.nanorc
+++ b/syntax/c.nanorc
@@ -1,6 +1,6 @@
 ## Here is an example for C/C++.
 
-syntax c "\.([ch](pp|xx)?|C|cc|c\+\+|H|hh|ii?)$"
+syntax c "\.([ch](pp|xx)?|C|cc|c\+\+|cu|H|hh|ii?)$"
 magic "^(C|C\+\+) (source|program)"
 comment "//"
 
diff --git a/syntax/php.nanorc b/syntax/php.nanorc
index dead9d30..1a61f066 100644
--- a/syntax/php.nanorc
+++ b/syntax/php.nanorc
@@ -1,6 +1,6 @@
 ## Here is an example for PHP.
 
-syntax php "\.ph(p[23457s~]?|tml)$"
+syntax php "\.(php[23457s~]?|phtml|ctp)$"
 magic "PHP script"
 comment "//"