diff --git a/csharp.nanorc b/csharp.nanorc
index 3093e0a..893bb37 100644
--- a/csharp.nanorc
+++ b/csharp.nanorc
@@ -20,7 +20,7 @@ color yellow ""(\\.|[^"])*"|'(\\.|[^'])*'"
 color magenta   "\\([btnfr]|'|\"|\\)"
 color magenta   "\\u[A-Fa-f0-9]{4}"
 color brightblack "(^|[[:space:]])//.*"
-color brightblack start="/\*" end="\*/"
+color brightblack start="^\s*/\*" end="\*/"
 color brightwhite,cyan "TODO:?"
 color ,green "[[:space:]]+$"
 color ,red "	+ +| +	+"
diff --git a/dot.nanorc b/dot.nanorc
index 441a35c..40d4d06 100644
--- a/dot.nanorc
+++ b/dot.nanorc
@@ -5,4 +5,4 @@ color magenta "\<(arrowhead|arrowsize|arrowtail|bgcolor|center|color|constraint|
 color red  "=|->|--"
 color yellow ""(\\.|[^"])*"|'(\\.|[^'])*'"
 color brightblack "(^|[[:space:]])//.*"
-color brightblack start="/\*" end="\*/"
+color brightblack start="^\s*/\*" end="\*/"
diff --git a/fsharp.nanorc b/fsharp.nanorc
index 90a7796..0ec109d 100644
--- a/fsharp.nanorc
+++ b/fsharp.nanorc
@@ -26,7 +26,7 @@ color yellow ""(\\.|[^"])*""
 
 # Comments
 color brightblack "(^|[[:space:]])//.*"
-color brightblack start="/\*" end="\*/"
+color brightblack start="^\s*/\*" end="\*/"
 color brightblack start="\(\*" end="\*\)"
 color brightwhite,cyan "TODO:?"
 
diff --git a/genie.nanorc b/genie.nanorc
index 187e864..0cd3722 100644
--- a/genie.nanorc
+++ b/genie.nanorc
@@ -44,7 +44,7 @@ color blue start=""""" end="""""
 color yellow "(^|[[:space:]])//.*"
 
 # Block comment.
-color yellow start="/\*" end="\*/"
+color yellow start="^\s*/\*" end="\*/"
 
 # Trailing whitespace.
 color ,green "[[:space:]]+$"
diff --git a/glsl.nanorc b/glsl.nanorc
index 1cec6cf..d098e29 100644
--- a/glsl.nanorc
+++ b/glsl.nanorc
@@ -9,7 +9,7 @@ color brightcyan "\<(true|false)\>"
 color red "[-+/*=<>?:!~%&|^]"
 color blue   "\<([0-9]+|0x[0-9a-fA-F]*)\>"
 color brightblack "(^|[[:space:]])//.*"
-color brightblack start="/\*" end="\*/"
+color brightblack start="^\s*/\*" end="\*/"
 color brightwhite,cyan "TODO:?"
 color ,green "[[:space:]]+$"
 color ,red "	+ +| +	+"
diff --git a/go.nanorc b/go.nanorc
index d5d8ca8..acd32df 100644
--- a/go.nanorc
+++ b/go.nanorc
@@ -17,7 +17,7 @@ color magenta   "\\[abfnrtv'\"\\]"
 color magenta   "\\([0-7]{3}|x[A-Fa-f0-9]{2}|u[A-Fa-f0-9]{4}|U[A-Fa-f0-9]{8})"
 color yellow   "`[^`]*`"
 color brightblack "(^|[[:space:]])//.*"
-color brightblack start="/\*" end="\*/"
+color brightblack start="^\s*/\*" end="\*/"
 color brightwhite,cyan "TODO:?"
 color ,green "[[:space:]]+$"
 color ,red "	+ +| +	+"
diff --git a/java.nanorc b/java.nanorc
index 46e5dd5..e43daf9 100644
--- a/java.nanorc
+++ b/java.nanorc
@@ -11,6 +11,6 @@ color red ""[^"]*""
 color yellow "\<(true|false|null)\>"
 icolor yellow "\b(([1-9][0-9]+)|0+)\.[0-9]+\b" "\b[1-9][0-9]*\b" "\b0[0-7]*\b" "\b0x[1-9a-f][0-9a-f]*\b"
 color blue "^\s*//.*"
-color blue start="/\*" end="\*/"
+color blue start="^\s*/\*" end="\*/"
 color brightblue start="/\*\*" end="\*/"
 color ,green "[[:space:]]+$"
diff --git a/js.nanorc b/js.nanorc
index d5f1d8d..3d484ba 100644
--- a/js.nanorc
+++ b/js.nanorc
@@ -49,5 +49,5 @@ color ,green "[[:space:]]+$"
 color red "\\[0-7][0-7]?[0-7]?|\\x[0-9a-fA-F]+|\\[bfnrt'"\?\\]"
 
 ## Comments
-color brightblue start="/\*" end="\*/"
+color brightblue start="^\s*/\*" end="\*/"
 color brightblue "^\s*//.*$"
diff --git a/kotlin.nanorc b/kotlin.nanorc
index a70b18d..ec05c61 100644
--- a/kotlin.nanorc
+++ b/kotlin.nanorc
@@ -20,7 +20,7 @@ color brightblue "<[^= 	]*>" ""(\\.|[^"])*""
 
 ## Comment highlighting
 color red "^\s*//.*"
-color red start="/\*" end="\*/"
+color red start="^\s*/\*" end="\*/"
 
 ## Trailing whitespace
 color ,green "[[:space:]]+$"
diff --git a/pov.nanorc b/pov.nanorc
index 5d18ee8..9151792 100644
--- a/pov.nanorc
+++ b/pov.nanorc
@@ -14,4 +14,4 @@ color green "(\{|\}|\(|\)|\;|\]|\[|`|\\|\$|<|>|!|=|&|\|)"
 color brightmagenta "\<(union|group|subgroup)\>"
 ## Comment highlighting
 color brightblue "^\s*//.*"
-color brightblue start="/\*" end="\*/"
+color brightblue start="^\s*/\*" end="\*/"
diff --git a/prolog.nanorc b/prolog.nanorc
index 8475ab6..56165d4 100644
--- a/prolog.nanorc
+++ b/prolog.nanorc
@@ -26,7 +26,7 @@ color green start="'" end="'"
 
 # Comments
 color white "(^|[[:blank:]])%.*$"
-color white start="/\*" end="\*/"
+color white start="^\s*/\*" end="\*/"
 
 # Reminders
 color black,yellow "(BUG|DEBUG|FIXME|IDEA|NOTE|REVIEW|TEMP|TODO|WARNING|XXX)"
diff --git a/pug.nanorc b/pug.nanorc
index 49d4ab4..a1855c0 100644
--- a/pug.nanorc
+++ b/pug.nanorc
@@ -27,7 +27,7 @@ color cyan "('[^']*')|(\"[^\"]*\")"
 icolor green "\(" "\)" "\," "\="
 # Comments, dashes and spaces
 color blue "\s+(//.*)"
-color blue start="/\*" end="\*/"
+color blue start="^\s*/\*" end="\*/"
 color white "^\s*(\-)"
 color ,green "[[:space:]]+$"
 # Unbuffered comments
diff --git a/rust.nanorc b/rust.nanorc
index a7b139b..88a0be8 100644
--- a/rust.nanorc
+++ b/rust.nanorc
@@ -30,7 +30,7 @@ color green start="r#+\"" end="\"#+"
 
 # Comments
 color blue "^\s*//.*"
-color blue start="/\*" end="\*/"
+color blue start="^\s*/\*" end="\*/"
 
 # Attributes
 color magenta start="#!\[" end="\]"
diff --git a/scala.nanorc b/scala.nanorc
index ab2a119..53fc5f7 100644
--- a/scala.nanorc
+++ b/scala.nanorc
@@ -7,6 +7,6 @@ color cyan "\<(def|object|case|trait|lazy|implicit|abstract|class|extends|final|
 color red ""[^"]*""
 color yellow "\<(true|false|null)\>"
 color blue "^\s*//.*"
-color blue start="/\*" end="\*/"
+color blue start="^\s*/\*" end="\*/"
 color brightblue start="/\*\*" end="\*/"
 color ,green "[[:space:]]+$"
diff --git a/vala.nanorc b/vala.nanorc
index 52f58b9..0864cf1 100644
--- a/vala.nanorc
+++ b/vala.nanorc
@@ -12,7 +12,7 @@ color blue   "\<([0-9]+)\>"
 color red "[-+/*=<>?:!~%&|]" "->"
 color yellow ""(\\.|[^"])*"|'(\\.|[^'])*'"
 color brightblack "(^|[[:space:]])//.*"
-color brightblack start="/\*" end="\*/"
+color brightblack start="^\s*/\*" end="\*/"
 color brightwhite,cyan "TODO:?"
 color ,green "[[:space:]]+$"
 color ,red "	+ +| +	+"