diff --git a/src/arbits/slbt_archive_dlsyms.c b/src/arbits/slbt_archive_dlsyms.c
index 6cacccd..5aebf96 100644
--- a/src/arbits/slbt_archive_dlsyms.c
+++ b/src/arbits/slbt_archive_dlsyms.c
@@ -139,19 +139,19 @@ static int slbt_ar_output_dlsyms_impl(
 	memset(cline[5],0,72);
 	cline[5][0] = '\n';
 
-	len = snprintf(&cline[1][3],72,
+	len = snprintf(&cline[1][3],69,
 		"backward-compatible dlsym table");
 
 	cline[1][3+len] = ' ';
 
-	len = snprintf(&cline[2][3],72,
+	len = snprintf(&cline[2][3],69,
 		"Generated by %s (slibtool %d.%d.%d)",
 		dctx->program,
 		verinfo->major,verinfo->minor,verinfo->revision);
 
 	cline[2][3+len] = ' ';
 
-	len = snprintf(&cline[3][3],72,
+	len = snprintf(&cline[3][3],69,
 		"[commit reference: %s]",
 		verinfo->commit);