1 files changed, 1 insertions, 1 deletions
diff --git a/taint.c b/taint.c
index c272066e8d..c0a71cb2d8 100644
--- a/taint.c
+++ b/taint.c
@@ -9,7 +9,7 @@
 #include "perl.h"
 
 void
-Perl_taint_proper(pTHX_ const char *f, char *s)
+Perl_taint_proper(pTHX_ const char *f, const char *s)
 {
     dTHR;	/* just for taint */
     char *ug;