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-rw-r--r--converter/other/pamtopam.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/converter/other/pamtopam.c b/converter/other/pamtopam.c
index 4630fb9f..cae54060 100644
--- a/converter/other/pamtopam.c
+++ b/converter/other/pamtopam.c
@@ -15,7 +15,7 @@
 #include "pam.h"
 
 int
-main(int argc, char *argv[]) {
+main(int argc, const char * argv[]) {
 
     bool       eof;     /* no more images in input stream */
     struct pam inpam;   /* Input PAM image */