diff --git a/syntax/asm.nanorc b/syntax/asm.nanorc
index 525dd100..8bc217eb 100644
--- a/syntax/asm.nanorc
+++ b/syntax/asm.nanorc
@@ -13,9 +13,6 @@ color brightcyan "^[[:space:]]*#[[:space:]]*(define|undef|include|ifn?def|endif|
 
 # Strings.
 color brightyellow "<[^= 	]*>" ""(\\.|[^"])*""
-# Multiline strings.  This regex is VERY resource intensive,
-# and sometimes colours things that shouldn't be coloured.
-###color brightyellow start=""(\\.|[^"])*\\[[:space:]]*$" end="^(\\.|[^"])*""
 
 # Comments.
 color brightblue "//.*"
diff --git a/syntax/c.nanorc b/syntax/c.nanorc
index 58c97d12..53ac6efc 100644
--- a/syntax/c.nanorc
+++ b/syntax/c.nanorc
@@ -24,9 +24,6 @@ color cyan "__attribute__[[:space:]]*\(\([^)]*\)\)" "__(aligned|asm|builtin|hidd
 # Strings.  In general you will want your strings and comments to come last,
 # because highlighting rules are applied in the order they are read in.
 color brightyellow ""([^"]|\\")*"" "#[[:space:]]*include[[:space:]]+<[^[:blank:]=]*>"
-# Multiline strings.  This regex is VERY resource intensive,
-# and sometimes colours things that shouldn't be coloured.
-###color brightyellow start=""(\\.|[^"])*\\[[:space:]]*$" end="^(\\.|[^"])*""
 
 # Preprocessor directives.
 color brightcyan start="^[[:space:]]*#[[:space:]]*(if(n?def)?|elif|warning|error|pragma)\>" end="(\`|[^\\])$"
diff --git a/syntax/objc.nanorc b/syntax/objc.nanorc
index 0f6dc6b3..f35f60db 100644
--- a/syntax/objc.nanorc
+++ b/syntax/objc.nanorc
@@ -27,9 +27,6 @@ color white "\[[^][:space:]]*\]"
 color brightblack "'([^'\]|(\\["'abfnrtv\\]))'" "'\\(([0-3]?[0-7]{1,2}))'" "'\\x[0-9A-Fa-f]{1,2}'"
 color brightblack "<[^= 	]*>" ""(\\.|[^"])*""
 color brightblue "@"(\\.|[^"])*""
-# Multiline strings.  This regex is VERY resource intensive,
-# and sometimes colours things that shouldn't be coloured.
-###color brightyellow start=""(\\.|[^"])*\\[[:space:]]*$" end="^(\\.|[^"])*""
 
 # Preprocessor commands.
 color brightblue "^[[:space:]]*#[[:space:]]*(define|include|import|(un|ifn?)def|endif|el(if|se)|if|warning|error)"