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-rw-r--r--utils/Burg/fe.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/utils/Burg/fe.h b/utils/Burg/fe.h
index 5cef79bbe1..70e98e2215 100644
--- a/utils/Burg/fe.h
+++ b/utils/Burg/fe.h
@@ -121,7 +121,7 @@ extern int max_ruleAST;
extern List ruleASTs;
extern FILE *outfile;
-extern char *prefix;
+extern const char *prefix;
extern int trimflag;
extern int speedflag;
extern int grammarflag;