diff --git a/src/translate.cpp b/src/translate.cpp
index fa169ba7..69259fc9 100755
--- a/src/translate.cpp
+++ b/src/translate.cpp
@@ -387,7 +387,7 @@ int IsAlpha(unsigned int c)
 	return(0);
 }
 
-int IsDigit09(unsigned int c)
+static int IsDigit09(unsigned int c)
 {//=========================
 	if((c >= '0') && (c <= '9'))
 		return(1);