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-rw-r--r--converter/other/pbmtopgm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/converter/other/pbmtopgm.c b/converter/other/pbmtopgm.c
index b9762e26..44d8cbc2 100644
--- a/converter/other/pbmtopgm.c
+++ b/converter/other/pbmtopgm.c
@@ -43,7 +43,7 @@ parseCommandLine(int                  const argc,
         if (argc-1 >= 3)
             cmdlineP->inputFileName = argv[3];
         else {
-            cmdlineP->inputFileName = "'";
+            cmdlineP->inputFileName = "-";
 
             if (argc-1 > 3)
                 pm_error("Too many arguments (%d).  The most possible are "