diff --git a/src/bin/jp3d/convert.c b/src/bin/jp3d/convert.c
index 7d802445..23fd70b0 100644
--- a/src/bin/jp3d/convert.c
+++ b/src/bin/jp3d/convert.c
@@ -788,7 +788,7 @@ int volumetobin(opj_volume_t * volume, char *outfile)
 
     fclose(fdest);
 
-    sprintf(name, "%s.img", outfile);
+    snprintf(name, sizeof(name), "%s.img", outfile);
     fimgdest = fopen(name, "w");
     if (!fimgdest) {
         fprintf(stdout, "[ERROR] Failed to open %s for writing\n", name);