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-rw-r--r--converter/other/pamtopfm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/converter/other/pamtopfm.c b/converter/other/pamtopfm.c
index 44a8ab08..ee44eeb5 100644
--- a/converter/other/pamtopfm.c
+++ b/converter/other/pamtopfm.c
@@ -279,7 +279,7 @@ main(int argc, char **argv ) {
 
     ifP = pm_openr(cmdline.inputFilespec);
 
-    tuplenArray = pnm_readpamn(ifP, &pam, sizeof(pam));
+    tuplenArray = pnm_readpamn(ifP, &pam, PAM_STRUCT_SIZE(tuple_type));
 
     writePfmHeader(stdout, 
                    makePfmHeader(&pam, cmdline.scale, cmdline.endian));