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-rw-r--r--src/factor.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/factor.c b/src/factor.c
index c116acdbb..681db362d 100644
--- a/src/factor.c
+++ b/src/factor.c
@@ -60,7 +60,7 @@ static const unsigned char wheel_tab[] =
#define WHEEL_END (wheel_tab + (sizeof wheel_tab / sizeof wheel_tab[0]))
/* The name this program was run with. */
-char *program_name;
+char const *program_name;
void
usage (int status)