diff --git a/intern/itasc/kdl/utilities/utility_io.cpp b/intern/itasc/kdl/utilities/utility_io.cpp
index e16a85167bc..8656b05545c 100644
--- a/intern/itasc/kdl/utilities/utility_io.cpp
+++ b/intern/itasc/kdl/utilities/utility_io.cpp
@@ -39,7 +39,7 @@ namespace KDL {
             }
     }
 // Eats until the end of the line
-	int _EatUntilEndOfLine( std::istream& is, int* countp=NULL) {
+static int _EatUntilEndOfLine( std::istream& is, int* countp=NULL) {
     int ch;
     int count;
     count = 0;
@@ -53,7 +53,7 @@ namespace KDL {
 }
 
 // Eats until the end of the comment
-	int _EatUntilEndOfComment( std::istream& is, int* countp=NULL) {
+static int _EatUntilEndOfComment( std::istream& is, int* countp=NULL) {
     int ch;
     int count;
     count = 0;
@@ -75,7 +75,7 @@ namespace KDL {
 
 // Eats space-like characters and comments
 // possibly returns the number of space-like characters eaten.
-int _EatSpace( std::istream& is,int* countp=NULL) {
+static int _EatSpace( std::istream& is,int* countp=NULL) {
     int ch;
     int count;
     count=-1;