diff --git a/cpp/QrSegment.hpp b/cpp/QrSegment.hpp
index 44c74ab..2e83465 100644
--- a/cpp/QrSegment.hpp
+++ b/cpp/QrSegment.hpp
@@ -172,9 +172,9 @@ class QrSegment final {
 	public: const std::vector<bool> &getData() const;
 	
 	
-	// Calculates the number of bits needed to encode the given segments at the given version.
-	// Returns a non-negative number if successful. Otherwise returns -1 if a segment has too
-	// many characters to fit its length field, or the total bits exceeds INT_MAX.
+	// (Package-private) Calculates the number of bits needed to encode the given segments at
+	// the given version. Returns a non-negative number if successful. Otherwise returns -1 if a
+	// segment has too many characters to fit its length field, or the total bits exceeds INT_MAX.
 	public: static int getTotalBits(const std::vector<QrSegment> &segs, int version);
 	
 	
diff --git a/javascript/qrcodegen.js b/javascript/qrcodegen.js
index f328298..14505be 100644
--- a/javascript/qrcodegen.js
+++ b/javascript/qrcodegen.js
@@ -813,8 +813,8 @@ var qrcodegen = new function() {
 	};
 	
 	
-	// Calculates and returns the number of bits needed to encode the given segments at the given version.
-	// The result is infinity if a segment has too many characters to fit its length field.
+	// (Package-private) Calculates and returns the number of bits needed to encode the given segments at the
+	// given version. The result is infinity if a segment has too many characters to fit its length field.
 	this.QrSegment.getTotalBits = function(segs, version) {
 		if (version < MIN_VERSION || version > MAX_VERSION)
 			throw "Version number out of range";
diff --git a/python/qrcodegen.py b/python/qrcodegen.py
index 8865923..58a6f6e 100644
--- a/python/qrcodegen.py
+++ b/python/qrcodegen.py
@@ -697,11 +697,12 @@ class QrSegment(object):
 		return list(self._bitdata)  # Make defensive copy
 	
 	
-	# Calculates the number of bits needed to encode the given segments at the given version.
-	# Returns a non-negative number if successful. Otherwise returns None if a segment has
-	# too many characters to fit its length field.
+	# Package-private function
 	@staticmethod
 	def get_total_bits(segs, version):
+		"""Calculates the number of bits needed to encode the given segments at
+		the given version. Returns a non-negative number if successful. Otherwise
+		returns None if a segment has too many characters to fit its length field."""
 		if not (QrCode.MIN_VERSION <= version <= QrCode.MAX_VERSION):
 			raise ValueError("Version number out of range")
 		result = 0
diff --git a/typescript/qrcodegen.ts b/typescript/qrcodegen.ts
index 108d30e..54c3a2c 100644
--- a/typescript/qrcodegen.ts
+++ b/typescript/qrcodegen.ts
@@ -769,8 +769,8 @@ namespace qrcodegen {
 		}
 		
 		
-		// Calculates and returns the number of bits needed to encode the given segments at the given version.
-		// The result is infinity if a segment has too many characters to fit its length field.
+		// (Package-private) Calculates and returns the number of bits needed to encode the given segments at
+		// the given version. The result is infinity if a segment has too many characters to fit its length field.
 		public static getTotalBits(segs: Array<QrSegment>, version: int): number {
 			if (version < QrCode.MIN_VERSION || version > QrCode.MAX_VERSION)
 				throw "Version number out of range";